Engineering:Applications of 3D printing

From HandWiki

In recent years, 3D printing has developed significantly and can now perform crucial roles in many applications, with the most common applications being manufacturing, medicine, architecture, custom art and design, and can vary from fully functional to purely aesthetic applications.

3D printed chocolate

3D printing processes are finally catching up to their full potential, and are currently being used in manufacturing and medical industries, as well as by sociocultural sectors which facilitate 3D printing for commercial purposes.[1] There has been a lot of hype in the last decade when referring to the possibilities we can achieve by adopting 3D printing as one of the main manufacturing technologies. Utilizing this technology would replace traditional methods that can be costly and time consuming. There have been case studies outlining how the customization abilities of 3D printing through modifiable files have been beneficial for cost and time effectiveness in a healthcare applications.[2][3][4][5][6][7]

There are different types of 3D printing such as Fused filament fabrication (FFF), Stereolithography (SLA), Selective Laser Sintering (SLS), polyjet printing, Multi-Jet Fusion (MJF), Direct Metal Laser Sintering (DMLS), and Electron Beam Melting (EBM).

For a long time, the issue with 3D printing was that it has demanded very high entry costs, which does not allow profitable implementation to mass-manufacturers when compared to standard processes. However, recent market trends spotted have found that this is finally changing. As the market for 3D printing has shown some of the quickest growth within the manufacturing industry in recent years.[8] The applications of 3D printing are vast due to the ability to print complex pieces with a use of a wide range of materials. Materials can range from plastic and polymers as thermoplastic filaments, to resins, and even stem cells.[4]

Manufacturing applications

Three-dimensional printing makes it as cheap to create single items as it is to produce thousands and thus undermines economies of scale. It may have as profound an impact on the world as the coming of the factory did (...) Just as nobody could have predicted the impact of the steam engine in 1750—or the printing press in 1450, or the transistor in 1950—it is impossible to foresee the long-term impact of 3D printing. But the technology is coming, and it is likely to disrupt every field it touches.
The Economist, in a February 10, 2011 leader[9]

AM technologies found applications starting in the 1980s in product development, data visualization, rapid prototyping, and specialized manufacturing. Their expansion into production (job production, mass production, and distributed manufacturing) has been under development in the decades since. Industrial production roles within the metalworking industries[10] achieved significant scale for the first time in the early 2010s. Since the start of the 21st century there has been a large growth in the sales of AM machines, and their price has dropped substantially.[11] According to Wohlers Associates, a consultancy, the market for 3D printers and services was worth $2.2 billion worldwide in 2012, up 29% from 2011.[12] McKinsey predicts that additive manufacturing could have an economic impact of $550 billion annually by 2025.[13] There are many applications for AM technologies, including architecture, construction (AEC), industrial design, automotive, aerospace,[14] military, engineering, dental and medical industries, biotech (human tissue replacement), fashion, footwear, jewelry, eyewear, education, geographic information systems, food, and many other fields.

Additive manufacturing's earliest applications have been on the toolroom end of the manufacturing spectrum. For example, rapid prototyping was one of the earliest additive variants, and its mission was to reduce the lead time and cost of developing prototypes of new parts and devices, which was earlier only done with subtractive toolroom methods such as CNC milling and turning, and precision grinding, far more accurate than 3d printing with accuracy down to 0.00005" and creating better quality parts faster, but sometimes too expensive for low accuracy prototype parts.[15] With technological advances in additive manufacturing, however, and the dissemination of those advances into the business world, additive methods are moving ever further into the production end of manufacturing in creative and sometimes unexpected ways.[15] Parts that were formerly the sole province of subtractive methods can now in some cases be made more profitably via additive ones. In addition, new developments in RepRap technology allow the same device to perform both additive and subtractive manufacturing by swapping magnetic-mounted tool heads.[16]

Cloud-based additive manufacturing

Main page: Finance:3D printing marketplace
Example of an open source downloadable STL model

Additive manufacturing in combination with cloud computing technologies allows decentralized and geographically independent distributed production.[17] Cloud-based additive manufacturing refers to a service-oriented networked manufacturing model in which service consumers are able to build parts through Infrastructure-as-a-Service (IaaS), Platform-as-a-Service (PaaS), Hardware-as-a-Service (HaaS), and Software-as-a-Service (SaaS).[18][19][20] Distributed manufacturing as such is carried out by some enterprises; there is also a services like 3D Hubs that put people needing 3D printing in contact with owners of printers.[21]

Some companies offer online 3D printing services to both commercial and private customers,[22] working from 3D designs uploaded to the company website. 3D-printed designs are either shipped to the customer or picked up from the service provider.[23]

There are many open source websites that have downloadable STL files which are able to be modified or printed as is. Files ranging from functional tools to aesthetic figurines are available to the general public. Open source files can be beneficial for the user as the printed object can be more cost effective than commercial counterparts.[24]

Mass customization

Main page: Social:Mass customization
Miniature face models (from FaceGen) produced using Ceramic Based material on a Full Colour 3D Inkjet Printer

Companies have created services where consumers can customize objects using simplified web based customization software, and order the resulting items as 3D printed unique objects.[25][26] This now allows consumers to create things like custom cases for their mobile phones or scans of their brains.[27][28] Nokia has released the 3D designs for its case so that owners can customize their own case and have it 3D printed.[29]

Rapid manufacturing

Advances in RP technology have introduced materials that are appropriate for final manufacture, which has in turn introduced the possibility of directly manufacturing finished components. One advantage of 3D printing for rapid manufacturing lies in the relatively quick and inexpensive production of small numbers of parts.

Rapid manufacturing is a new method of manufacturing and many of its processes remain unproven. 3D printing is now entering the field of rapid manufacturing and was identified as a "next level" technology by many experts in a 2009 report.[30] One of the most promising processes looks to be the adaptation of selective laser sintering (SLS), or direct metal laser sintering (DMLS) some of the better-established rapid prototyping methods. (As of 2006), however, these techniques were still very much in their infancy, with many obstacles to be overcome before RM could be considered a realistic manufacturing method.[31]

There have been patent lawsuits concerning 3-D printing for manufacturing.[32]

Rapid prototyping

Main page: Social:Rapid prototyping
printed object

Industrial 3D printers have existed since the early 1980s and have been used extensively for rapid prototyping and research purposes. These are generally larger machines that use proprietary powdered metals, casting media (e.g. sand), plastics, paper or cartridges, and are used for rapid prototyping by universities and commercial companies.

Research

3D printing can be particularly useful in research labs due to its ability to make specialized, bespoke geometries. In 2012 a proof of principle project at the University of Glasgow, UK, showed that it is possible to use 3D printing techniques to assist in the production of chemical compounds. They first printed chemical reaction vessels, then used the printer to deposit reactants into them.[33] They have produced new compounds to verify the validity of the process, but have not pursued anything with a particular application.

Usually, the FDM process is used to print hollow reaction vessels or microreactors.[33] If the 3D print is performed within an inert gas atmosphere, the reaction vessels can be filled with highly reactive substances during the print. The 3D printed objects are air- and watertight for several weeks. By the print of reaction vessels in the geometry of common cuvettes or measurement tubes, routine analytical measurements such as UV/VIS-, IR- and NMR-spectroscopy can be performed directly in the 3D printed vessel.[34]

In addition, 3D printing has been used in research labs as alternative method to manufacture components for use in experiments, such as magnetic shielding and vacuum components with demonstrated performance comparable to traditionally produced parts.[35]

Food

Main page: Engineering:3D food printing

Additive manufacturing of food is being developed by squeezing out food, layer by layer, into three-dimensional objects. A large variety of foods are appropriate candidates, such as chocolate and candy, and flat foods such as crackers, pasta,[36] and pizza.[37][38] NASA has considered the versatility of the concept, awarding a contract to the Systems and Materials Research Consultancy to study the feasibility of printing food in space.[39] NASA is also looking into the technology in order to create 3D printed food to limit food waste and to make food that are designed to fit an astronaut's dietary needs.[40] A food-tech startup Novameat from Barcelona 3D-printed a steak from peas, rice, seaweed, and some other ingredients that were laid down criss-cross, imitating the intracellular proteins.[41] One of the problems with food printing is the nature of the texture of a food. For example, foods that are not strong enough to be filed are not appropriate for 3D printing.

Agile tooling

Agile tooling is the process of using modular means to design tooling that is produced by additive manufacturing or 3D printing methods to enable quick prototyping and responses to tooling and fixture needs. Agile tooling uses a cost-effective and high-quality method to quickly respond to customer and market needs. It can be used in hydro-forming, stamping, injection molding and other manufacturing processes.

Medical applications

Surgical uses of 3D printing-centric therapies have a history beginning in the mid-1990s with anatomical modeling for bony reconstructive surgery planning.[42] By practicing on a tactile model before surgery, surgeons were more prepared and patients received better care. Patient-matched implants were a natural extension of this work, leading to truly personalized implants that fit one unique individual.[43] Virtual planning of surgery and guidance using 3D printed, personalized instruments have been applied to many areas of surgery including total joint replacement and craniomaxillofacial reconstruction with great success.[clarification needed][44] Further study of the use of models for planning heart and solid organ surgery has led to increased use in these areas.[45] Hospital-based 3D printing is now of great interest and many institutions are pursuing adding this specialty within individual radiology departments.[46][47] The technology is being used to create unique, patient-matched devices for rare illnesses. One example of this is the bioresorbable trachial splint to treat newborns with tracheobronchomalacia[48] developed at the University of Michigan. Several devices manufacturers have also begun using 3D printing for patient-matched surgical guides (polymers). The use of additive manufacturing for serialized production of orthopedic implants (metals) is also increasing due to the ability to efficiently create porous surface structures that facilitate osseointegration. Printed casts for broken bones can be custom-fitted and open, letting the wearer scratch any itches, wash and ventilate the damaged area. They can also be recycled.

Fused filament fabrication (FFF) has been used to create microstructures with a three-dimensional internal geometry. Sacrificial structures or additional support materials are not needed. Structure using polylactic acid (PLA) can have fully controllable porosity in the range 20%–60%. Such scaffolds could serve as biomedical templates for cell culturing, or biodegradable implants for tissue engineering.[49]

3D printed human skull from computed computer tomography data

3D printing has been used to print patient-specific implant and device for medical use. Successful operations include a titanium pelvis implanted into a British patient, titanium lower jaw transplanted to a Dutch patient,[50] and a plastic tracheal splint for an American infant.[51] The hearing aid and dental industries are expected to be the biggest areas of future development using custom 3D printing technology.[52] In March 2014, surgeons in Swansea used 3D printed parts to rebuild the face of a motorcyclist who had been seriously injured in a road accident.[53] Research is also being conducted on methods to bio-print replacements for lost tissue due to arthritis and cancer [citation needed].

3D printing technology can now be used to make exact replicas of organs. The printer uses images from patients' MRI or CT scan images as a template and lays down layers of rubber or plastic. These models can be used to plan difficult operations, as was the case in May 2018, when surgeons used a 3D printed replica of a kidney to practice a kidney transplant on a three-year-old boy.[54]

Thermal degradation during 3D printing of resorbable polymers, same as in surgical sutures, has been studied, and parameters can be adjusted to minimize the degradation during processing. Soft pliable scaffold structures for cell cultures can be printed.[55]

In 3D printing, computer-simulated microstructures are commonly used to fabricate objects with spatially varying properties. This is achieved by dividing the volume of the desired object into smaller subcells using computer aided simulation tools and then filling these cells with appropriate microstructures during fabrication. Several different candidate structures with similar behaviours are checked against each other and the object is fabricated when an optimal set of structures are found. Advanced topology optimization methods are used to ensure the compatibility of structures in adjacent cells. This flexible approach to 3D fabrication is widely used across various disciplines from biomedical sciences where they are used to create complex bone structures[56] and human tissue[57] to robotics where they are used in the creation of soft robots with movable parts.[58][59] 3D printing also finds its uses more and more in design and fabrication of laboratory apparatuses.[60]

3D printing technology can also be used to produce personal protective equipment, also known as PPE, is worn by medical and laboratory professionals to protect themselves from infection when they are treating patients. Examples of PPE include face masks, face shields, connectors, gowns, and goggles. The most popular forms of 3D printed PPE are face masks, face shields, and connectors.[61]

Nowadays, Additive Manufacturing is also employed in the field of pharmaceutical sciences. Different techniques of 3D printing (e.g. FDM, SLS, Inkjet Printing etc) are utilized according to their respective advantages and drawbacks for various applications regarding drug delivery.

Bio-printing

See also: Biomolecular printingIn 2006, researchers at Cornell University published some of the pioneer work in 3D printing for tissue fabrication, successfully printing hydrogel bio-inks.[62] The work at Cornell was expanded using specialized bioprinters produced by Seraph Robotics, Inc., a university spin-out, which helped to catalyze a global interest in biomedical 3D printing research.

3D printing has been considered as a method of implanting stem cells capable of generating new tissues and organs in living humans.[63] With their ability to transform into any other kind of cell in the human body, stem cells offer huge potential in 3D bioprinting.[64] Professor Leroy Cronin of Glasgow University proposed in a 2012 TED Talk that it was possible to use chemical inks to print medicine.[65] In 2015 the FDA approved Spritam ®, a 3D printed drug also known as levetiracetam.[66] Currently, there are three methods of 3D printing that have been explored for the production of drug making: laser based writing systems, printing-based inkjet systems, and nozzle based systems.[66][67]

(As of 2012), 3D bio-printing technology has been studied by biotechnology firms and academia for possible use in tissue engineering applications in which organs and body parts are built using inkjet techniques. In this process, layers of living cells are deposited onto a gel medium or sugar matrix and slowly built up to form three-dimensional structures including vascular systems.[68] The first production system for 3D tissue printing was delivered in 2009, based on NovoGen bioprinting technology.[69] Several terms have been used to refer to this field of research: organ printing, bio-printing, body part printing,[70] and computer-aided tissue engineering, among others.[71] The possibility of using 3D tissue printing to create soft tissue architectures for reconstructive surgery is also being explored.[72]

In 2013, Chinese scientists began printing ears, livers and kidneys, with living tissue. Researchers in China have been able to successfully print human organs using specialized 3D bioprinters that use living cells instead of plastic [citation needed]. Researchers at Hangzhou Dianzi University designed the "3D bioprinter" dubbed the "Regenovo". Xu Mingen, Regenovo's developer, said that it can produce a miniature sample of liver tissue or ear cartilage in less than an hour, predicting that fully functional printed organs might take 10 to 20 years to develop.[73][74]

Medical devices

Star Wars themed "Hero Arm" from Open Bionics.

On October 24, 2014, a five-year-old girl born without fully formed fingers on her left hand became the first child in the UK to have a prosthetic hand made with 3D printing technology. Her hand was designed by US-based e-NABLE, an open source design organisation which uses a network of volunteers to design and make prosthetics mainly for children. The prosthetic hand was based on a plaster cast made by her parents.[75] A boy named Alex was also born with a missing arm from just above the elbow. The team was able to use 3D printing to upload an e-NABLE Myoelectric arm that runs off of servos and batteries that are actuated by the electromyography muscle. With the use of 3D printers, e-NABLE has so far distributed thousands of plastic hands to children. Another example is Open Bionics, a company that makes fully functional bionic arms through 3D printing technology. 3D printing allows Open Bionics to create personalized designs for their clients, as there can be different colours, textures, patterns, and even "Hero Arms" that emulate superheroes like Ironman or characters from Star Wars.

Printed prosthetics have been used in rehabilitation of crippled animals. In 2013, a 3D printed foot let a crippled duckling walk again.[76] 3D printed hermit crab shells let hermit crabs inhabit a new style home.[77] A prosthetic beak was another tool developed by the use of 3D printing to help aid a bald eagle named Beauty, whose beak was severely mutilated from a shot in the face. Since 2014, commercially available titanium knee implants made with 3D printer for dogs have been used to restore the animals' mobility. Over 10,000 dogs in Europe and the United States have been treated after only one year.[78]

In February 2015, FDA approved the marketing of a surgical bolt which facilitates less-invasive foot surgery and eliminates the need to drill through bone. The 3D printed titanium device, 'FastForward Bone Tether Plate' is approved to use in correction surgery to treat bunion.[79] In October 2015, the group of Professor Andreas Herrmann at the University of Groningen has developed the first 3D printable resins with antimicrobial properties. Employing stereolithography, quaternary ammonium groups are incorporated into dental appliances that kill bacteria on contact. This type of material can be further applied in medical devices and implants.[80]

3D Printing has been especially beneficial for the creation of patient specific prosthetics for large or invasive surgeries. In a case study published in 2020 about the benefits of 3D printing for hip prostheses, three patients with acetabular defects needed revisions of total hip arthroplasty (THA). 3D printing was utilized to produce prostheses that were specific to each of the three patients and their complex bone defect, which resulted in better post procedure recovery and prognosis of the individual.[5]

In a case study about the applications of 3D printing in occupational therapy, the aspect of customization and quick fabrication at a low cost is utilized in different tools such as customized scissor handles and bottle openers for someone with hand motor complications. Beverage holders, writing guides, grip strengtheners, and other occupational therapy items were designed, printed, and compared with commercially available counterparts in a cost analysis. It found that the 3D printed items were on average 10.5 times more cost effective than commercial alternatives.[6]

3D printing for medical devices can range from human prosthetics applications, to animal prostheses, to medical machine tools: On June 6, 2011, the company Xilloc Medical together with researchers at the University of Hasselt, in Belgium had successfully printed a new jawbone for an 83-year-old Dutch woman from the province of Limburg.[81] 3D printing has been used to produce prosthetic beaks for eagles, a Brazilian goose named Victoria, and a Costa Rican toucan called Grecia.[82] In March 2020, the Isinnova company in Italy printed 100 respirator valves in 24 hours for a hospital that lacked them in the midst of the coronavirus outbreak.[83] It's clear that 3D printing technology is beneficial in many areas of healthcare.

Pharmaceutical Formulations

Main page: Medicine:3D printed medicine

In May 2015 the first formulation manufactured by 3D printing was produced.[84] In August 2015 the FDA approved the first 3D printed tablet. Binder-jetting into a powder bed of the drug allows very porous tablets to be produced, which enables high drug doses in a single formulation that rapidly dissolves and is easily absorbed.[85] This has been demonstrated for Spritam, a reformulation of levetiracetam for the treatment of epilepsy.[86]

Additive Manufacturing has been increasingly utilized by scientists in the pharmaceutical field. However, after the first FDA approval of a 3D printed formulation, scientific interest for 3D applications in drug delivery grew even bigger. Research groups around the world are studying different ways of incorporating drugs within a 3D printed formulation, for example by incorporating poorly water-soluble drugs in self-emulsifying systems or emulsion gels. 3D printing technology allows scientists to develop formulations with a personalized approach, i.e. dosage forms tailored specifically to an individual patient. Moreover, according to the advantages of the diverse utilized techniques, formulations with various properties can be achieved. These may contain multiple drugs in a single dosage form, multi-compartmental designs, drug delivery systems with distinct release characteristics, etc.[87][88][89][90][91] During the earlier years, researchers have mainly focused on the Fused Deposition Modelling (FDM) technique. Nowadays, other printing techniques such as Selective Laser Sintering (SLS), Stereolithography (SLA) and Semi-solid extrusion (SSE) are also gaining traction and are being used for pharmaceutical applications.[87][92]

Industrial applications

Apparel

inBloom 3D printed outfit

3D printing has entered the world of clothing with fashion designers experimenting with 3D-printed bikinis, shoes, and dresses.[93] In commercial production Nikeused 3D printing to prototype and manufactured the 2012 Vapor Laser Talon football shoe for players of American football, and New Balance is 3D manufacturing custom-fit shoes for athletes.[93][94]

3D printing has come to the point where companies are printing consumer grade eyewear with on-demand custom fit and styling (although they cannot print the lenses). On-demand customization of glasses is possible with rapid prototyping.[95]

However, comments have been made in academic circles as to the potential limitation of the human acceptance of such mass customized apparel items due to the potential reduction of brand value communication.[96]

In the world of high fashion courtiers such as Karl Lagerfeld designing for Chanel, Iris van Herpen and Noa Raviv working with technology from Stratasys, have employed and featured 3d printing in their collections. Selections from their lines and other working with 3d printing were showcased at the 2016 Metropolitan Museum of Art Anna Wintour Costume Center, exhibition "Manus X Machina".[97][98]

Vanessa Friedman, fashion director and chief fashion critic at The New York Times, says 3D printing will have a significant value for fashion companies down the road, especially if it transforms into a print-it-yourself tool for shoppers. "There's real sense that this is not going to happen anytime soon," she says, "but it will happen, and it will create dramatic change in how we think both about intellectual property and how things are in the supply chain". She adds: "Certainly some of the fabrications that brands can use will be dramatically changed by technology."[99]

During the COVID-19 pandemic, the Ukrainian-American undergraduate Karina Popovich founded Markers for COVID-19 which used 3D printing to create face shields, face masks and other items of personal protective equipment.[100][101]

Industrial art and jewelry

3D printing is used to manufacture moulds for making jewelry, and even the jewelry itself.[102] 3D printing is becoming popular in the customisable gifts industry, with products such as personalized models of art and dolls,[103] in many shapes: in metal or plastic, or as consumable art, such as 3D printed chocolate.[104]

Transportation Industries

The Audi RSQ was made with rapid prototyping industrial KUKA robots.

In cars, trucks, and aircraft, additive manufacturing is beginning to transform both unibody and fuselage design and production, and powertrain design and production. For example, General Electric uses high-end 3D printers to build parts for turbines. Many of these systems are used for rapid prototyping before mass production methods are employed.

In early 2014, Swedish supercar manufacturer Koenigsegg announced the One:1, a supercar that utilizes many components that were 3D printed. In the limited run of vehicles Koenigsegg produces, the One:1 has side-mirror internals, air ducts, titanium exhaust components, and complete turbocharger assemblies that were 3D printed as part of the manufacturing process.[105]

Urbee is the name of the first car in the world car mounted using the technology 3D printing (its bodywork and car windows were "printed"). Created in 2010 through the partnership between the US engineering group Kor Ecologic and the company Stratasys (manufacturer of printers Stratasys 3D), it is a hybrid vehicle with futuristic look.[106][107][108]

In 2014, Local Motors debuted Strati, a functioning vehicle that was entirely 3D Printed using ABS plastic and carbon fiber, except the powertrain.[109] In 2015, the company produced another iteration known as the LM3D Swim that was 80 percent 3D-printed.[110] In 2016, the company has used 3D printing in the creation of automotive parts, such ones used in Olli, a self-driving vehicle developed by the company.[111][112]

In May 2015 Airbus announced that its new Airbus A350 XWB included over 1000 components manufactured by 3D printing.[113]

3D printing is also being utilized by air forces to print spare parts for planes. In 2015, a Royal Air Force Eurofighter Typhoon fighter jet flew with printed parts. The United States Air Force has begun to work with 3D printers, and the Israeli Air Force has also purchased a 3D printer to print spare parts.[114]

In 2017, GE Aviation revealed that it had used design for additive manufacturing to create a helicopter engine with 16 parts instead of 900, weighing 40% lighter and being 60% cheaper. This also led to needing less support from outer suppliers, as many of the parts could be produced in house. Showing how additive manufacturing could also have a large impact on reducing the complexity of supply chains.[115]

Construction, home development

Main page: Engineering:Construction 3D printing

The use of 3D printing to produce scale models within architecture and construction has steadily increased in popularity as the cost of 3D printers has reduced. This has enabled faster turn around of such scale models and allowed a steady increase in the speed of production and the complexity of the objects being produced.

Construction 3D printing, the application of 3D printing to fabricate construction components or entire buildings has been in development since the mid-1990s, development of new technologies has steadily gained pace since 2012 and the sub-sector of 3D printing is beginning to mature.

Firearms

In 2012, the US-based group Defense Distributed disclosed plans to "design a working plastic gun that could be downloaded and reproduced by anybody with a 3D printer."[116][117] Defense Distributed has also designed a 3D printable AR-15 type rifle lower receiver (capable of lasting more than 650 rounds) and a 30-round M16 magazine. The AR-15 has multiple receivers (both an upper and lower receiver), but the legally controlled part is the one that is serialized (the lower, in the AR-15's case). Soon after Defense Distributed succeeded in designing the first working blueprint to produce a plastic gun with a 3D printer in May 2013, the United States Department of State demanded that they remove the instructions from their website.[118] After Defense Distributed released their plans, questions were raised regarding the effects that 3D printing and widespread consumer-level CNC machining[119][120] may have on gun control effectiveness.[121][122][123][124]

In 2014, a man from Japan became the first person in the world to be imprisoned for making 3D printed firearms.[125] Yoshitomo Imura posted videos and blueprints of the gun online and was sentenced to jail for two years. Police found at least two guns in his household that were capable of firing bullets.[125]

Computers and robots

3D printing can also be used to make laptops and other computers and cases. For example, Novena and VIA OpenBook standard laptop cases. I.e. a Novena motherboard can be bought and be used in a printed VIA OpenBook case.[126]

Open-source robots are built using 3D printers. Double Robotics grant access to their technology (an open SDK).[127][128][129] On the other hand, 3&DBot is an Arduino 3D printer-robot with wheels[130] and ODOI is a 3D printed humanoid robot.[131]

Soft sensors and actuators

3D printing has found its place in soft sensors and actuators manufacturing inspired by 4D printing concept.[132][133] The majority of the conventional soft sensors and actuators are fabricated using multistep low yield processes entailing manual fabrication, post-processing/assembly, and lengthy iterations with less flexibility in customization and reproducibility of final products. 3D printing has been a game changer in these fields with introducing the custom geometrical, functional, and control properties to avoid the tedious and time-consuming aspects of the earlier fabrication processes.[134]

Sociocultural applications

An example of 3D printed limited edition jewellery. This necklace is made of glassfiber-filled dyed nylon. It has rotating linkages that were produced in the same manufacturing step as the other parts

In 2005, a rapidly expanding hobbyist and home-use market was established with the inauguration of the open-source RepRap and Fab@Home projects. Virtually all home-use 3D printers released to-date have their technical roots in the ongoing RepRap Project and associated open-source software initiatives.[135] In distributed manufacturing, one study has found[136] that 3D printing could become a mass market product enabling consumers to save money associated with purchasing common household objects.[137] For example, instead of going to a store to buy an object made in a factory by injection molding (such as a measuring cup or a funnel), a person might instead print it at home from a downloaded 3D model.

Art and jewellery

In 2005, academic journals began to report on the possible artistic applications of 3D printing technology,[138] being used by artists such as Martin John Callanan at The Bartlett school of architecture. By 2007 the mass media followed with an article in the Wall Street Journal[139] and Time (magazine) magazine, listing a printed design among their 100 most influential designs of the year.[140] During the 2011 London Design Festival, an installation, curated by Murray Moss and focused on 3D Printing, was held in the Victoria and Albert Museum (the V&A). The installation was called Industrial Revolution 2.0: How the Material World will Newly Materialize.[141]

At the 3DPrintshow in London, which took place in November 2013 and 2014, the art sections had works made with 3D printed plastic and metal. Several artists such as Joshua Harker, Davide Prete, Sophie Kahn, Helena Lukasova, Foteini Setaki showed how 3D printing can modify aesthetic and art processes.[142] In 2015, engineers and designers at MIT's Mediated Matter Group and Glass Lab created an additive 3D printer that prints with glass, called G3DP. The results can be structural as well as artistic. Transparent glass vessels printed on it are part of some museum collections.[143]

The use of 3D scanning technologies allows the replication of real objects without the use of moulding techniques that in many cases can be more expensive, more difficult, or too invasive to be performed, particularly for precious artwork or delicate cultural heritage artifacts[144] where direct contact with the moulding substances could harm the original object's surface.

3D selfies

Main page: 3D selfie
A 3D selfie in 1:20 scale printed by Shapeways using gypsum-based printing
Fantasitron 3D photo booth at Madurodam

A 3D photo booth such as the Fantasitron located at Madurodam, the miniature park, generates 3D selfie models from 2D pictures of customers. These selfies are often printed by dedicated 3D printing companies such as Shapeways. These models are also known as 3D portraits, 3D figurines or mini-me figurines.

Communication

Employing additive layer technology offered by 3D printing, Terahertz devices which act as waveguides, couplers and bends have been created. The complex shape of these devices could not be achieved using conventional fabrication techniques. Commercially available professional grade printer EDEN 260V was used to create structures with minimum feature size of 100 µm. The printed structures were later DC sputter coated with gold (or any other metal) to create a Terahertz Plasmonic Device.[145] In 2016 artist/scientist Janine Carr Created the first 3d printed vocal percussion (beatbox) as a waveform, with the ability to play the soundwave by laser, along with four vocalised emotions these were also playable by laser.[146]

Domestic use

Some early consumer examples of 3d printing include the 64DD released in 1999 in Japan.[147][148] As of 2012, domestic 3D printing was mainly practiced by hobbyists and enthusiasts. However, little was used for practical household applications, for example, ornamental objects. Some practical examples include a working clock[149] and gears printed for home woodworking machines among other purposes.[150] Web sites associated with home 3D printing tended to include backscratchers, coat hooks, door knobs, etc.[151]

As of 2023 consumer 3D printing has become increasingly common, an estimated 85% of 3D printers sold now are of the personal/desktop markets.[152] Now more than ever its increasingly common to see 3D printing utilized by at home DIY/maker communities as 3D printers have become significantly more affordable for consumer audiences in recent years.

The open source Fab@Home project[153] has developed printers for general use. They have been used in research environments to produce chemical compounds with 3D printing technology, including new ones, initially without immediate application as proof of principle.[33] The printer can print with anything that can be dispensed from a syringe as liquid or paste. The developers of the chemical application envisage both industrial and domestic use for this technology, including enabling users in remote locations to be able to produce their own medicine or household chemicals.[154][155]

3D printing is now working its way into households, and more and more children are being introduced to the concept of 3D printing at earlier ages. The prospects of 3D printing are growing, and as more people have access to this new innovation, new uses in households will emerge.[156]

The OpenReflex SLR film camera was developed for 3D printing as an open-source student project.[157]

Education and research

High School students from Wyomissing Area Jr/Sr High School in Pennsylvania, United States present their use of 3D Printing in the classroom

3D printing, and open source 3D printers in particular, are the latest technology making inroads into the classroom.[158][159][160] 3D printing allows students to create prototypes of items without the use of expensive tooling required in subtractive methods. Students design and produce actual models they can hold. The classroom environment allows students to learn and employ new applications for 3D printing.[161] RepRaps, for example, have already been used for an educational mobile robotics platform.[162]

Some authors have claimed that 3D printers offer an unprecedented "revolution" in STEM education.[163] The evidence for such claims comes from both the low cost ability for rapid prototyping in the classroom by students, but also the fabrication of low-cost high-quality scientific equipment from open hardware designs forming open-source labs.[164] Engineering and design principles are explored as well as architectural planning. Students recreate duplicates of museum items such as fossils and historical artifacts for study in the classroom without possibly damaging sensitive collections. Other students interested in graphic designing can construct models with complex working parts easily. 3D printing gives students a new perspective with topographic maps. Science students can study cross-sections of internal organs of the human body and other biological specimens. And chemistry students can explore 3D models of molecules and the relationship within chemical compounds.[165] The true representation of exactly scaled bond length and bond angles in 3D printed molecular models can be used in organic chemistry lecture courses to explain molecular geometry and reactivity.[166]

According to a recent paper by Kostakis et al.,[167] 3D printing and design can electrify various literacies and creative capacities of children in accordance with the spirit of the interconnected, information-based world.

Future applications for 3D printing might include creating open-source scientific equipment.[164][168]

Nowadays, the demand of 3D printing keep on increasing in order to fulfill the demands in producing parts with complex geometry at a lower development cost.[169] The increasing demands 3D printing parts in industry would eventually lead to the 3D printed parts repairing activity and secondary process such as joining, foaming and cutting. This secondary process need to be developed in order to support the growth of the 3D printing application in the future. From the research, FSW is proven able to be used as one of the methods to join the metal 3D printing materials. By using proper FSW tools and correct parameter setting a sound and defect-free weld can be produced in order to join the metal 3D printing materials.[170]

Environmental use

In Bahrain, large-scale 3D printing using a sandstone-like material has been used to create unique coral-shaped structures, which encourage coral polyps to colonize and regenerate damaged reefs. These structures have a much more natural shape than other structures used to create artificial reefs, and, unlike concrete, are neither acid nor alkaline with neutral pH.[171]

Cultural heritage

3D printed sculpture of the Egyptian Pharaoh Merankhre Mentuhotep shown at Threeding

In the last several years 3D printing has been intensively used by in the cultural heritage field for preservation, restoration and dissemination purposes.[172] Many Europeans and North American Museums have purchased 3D printers and actively recreate missing pieces of their relics.[173]

Scan the World is the largest archive of 3D printable objects of cultural significance from across the globe. Each object, originating from 3D scan data provided by their community, is optimised for 3D printing and free to download on MyMiniFactory. Through working alongside museums, such as The Victoria and Albert Museum[174] and private collectors,[175] the initiative serves as a platform for democratizing the art object.

The Metropolitan Museum of Art and the British Museum have started using their 3D printers to create museum souvenirs that are available in the museum shops.[176] Other museums, like the National Museum of Military History and Varna Historical Museum, have gone further and sell through the online platform Threeding digital models of their artifacts, created using Artec 3D scanners, in 3D printing friendly file format, which everyone can 3D print at home.[177]

Specialty materials

Consumer grade 3D printing has resulted in new materials that have been developed specifically for 3D printers. For example, filament materials have been developed to imitate wood in its appearance as well as its texture. Furthermore, new technologies, such as infusing carbon fiber[178] into printable plastics, allowing for a stronger, lighter material. In addition to new structural materials that have been developed due to 3D printing, new technologies have allowed for patterns to be applied directly to 3D printed parts. Iron oxide-free Portland cement powder has been used to create architectural structures up to 9 feet in height.[179][180][181]

See also

References

  1. Taufik, Mohammad; Jain, Prashant K. (2016-12-10). "Additive Manufacturing: Current Scenario". Proceedings of International Conference on: Advanced Production and Industrial Engineering -ICAPIE 2016: 380–386. https://www.ikbooks.com/books/book/engineering-computer-science/mechanical-production-industrial-engineering/proceedings-international-conference-on/9789385909511/. Retrieved May 31, 2017. 
  2. Singare, Sekou; Zhong, Shouyan; Xu, Guanghui; Wang, Weiping; Zhou, Jianjun (November 2010). "The Use of Laser Scanner and Rapid Prototyping to Fabricate Auricular Prosthesis". 2010 International Conference on E-Product E-Service and E-Entertainment. pp. 1–3. doi:10.1109/ICEEE.2010.5661536. ISBN 978-1-4244-7159-1. https://ieeexplore.ieee.org/document/5661536. 
  3. Varacallo, Matthew; Luo, T. David; Johanson, Norman A. (2022), "Total Hip Arthroplasty Techniques", StatPearls (Treasure Island (FL): StatPearls Publishing), PMID 29939641, http://www.ncbi.nlm.nih.gov/books/NBK507864/, retrieved 2022-04-04 
  4. 4.0 4.1 Tasoglu, Savas; Demirci, Utkan (January 2013). "Bioprinting for stem cell research" (in en). Trends in Biotechnology 31 (1): 10–19. doi:10.1016/j.tibtech.2012.10.005. PMID 23260439. 
  5. 5.0 5.1 Hao, Yongqiang; Wang, Lei; Jiang, Wenbo; Wu, Wen; Ai, Songtao; Shen, Lu; Zhao, Shuang; Dai, Kerong (November 2020). "3D Printing Hip Prostheses Offer Accurate Reconstruction, Stable Fixation, and Functional Recovery for Revision Total Hip Arthroplasty with Complex Acetabular Bone Defect" (in en). Engineering 6 (11): 1285–1290. doi:10.1016/j.eng.2020.04.013. 
  6. 6.0 6.1 Hunzeker, Megan; Ozelie, Rebecca (2021-01-15). "A Cost-Effective Analysis of 3D Printing Applications in Occupational Therapy Practice" (in en). The Open Journal of Occupational Therapy 9 (1): 1–12. doi:10.15453/2168-6408.1751. ISSN 2168-6408. https://scholarworks.wmich.edu/ojot/vol9/iss1/4. 
  7. Nguyen, Edward; Lockyer, Jamie; Erasmus, Jason; Lim, Christopher (June 2019). "Improved Outcomes of Orbital Reconstruction With Intraoperative Imaging and Rapid Prototyping" (in en). Journal of Oral and Maxillofacial Surgery 77 (6): 1211–1217. doi:10.1016/j.joms.2019.02.004. PMID 30851251. https://linkinghub.elsevier.com/retrieve/pii/S0278239119301405. 
  8. "3D Printing Trends That Will Shape Our Future in 2018 – 2019: Takeaways & Statistics from 27 Different Studies". JCAD. October 16, 2018. https://jcadusa.com/3d-printing-trends-statistics-2018-2019. 
  9. "Print me a Stradivarius – How a new manufacturing technology will change the world". The Economist. 2011-02-10. http://www.economist.com/node/18114327?story_id=18114327. Retrieved 2012-01-31. 
  10. Zelinski, Peter (2014-06-25). "Video: World's largest additive metal manufacturing plant". Modern Machine Shop. http://www.mmsonline.com/blog/post/video-worlds-largest-additive-metal-manufacturing-plant. 
  11. Sherman, Lilli Manolis. "3D Printers Lead Growth of Rapid Prototyping (Plastics Technology, August 2004)". http://www.ptonline.com/articles/200408cu3.html. Retrieved 2012-01-31. 
  12. "3D printing: 3D printing scales up". The Economist. 2013-09-07. https://www.economist.com/news/technology-quarterly/21584447-digital-manufacturing-there-lot-hype-around-3d-printing-it-fast. Retrieved 2013-10-30. 
  13. "A printed smile". The Economist. 28 April 2016. ISSN 0013-0613. https://www.economist.com/news/science-and-technology/21697802-3d-printing-coming-age-manufacturing-technique-printed-smile. 
  14. Quigley, Nick; Evans Lyne, James (2014). "Development of a Three-Dimensional Printed, Liquid-Cooled Nozzle for a Hybrid Rocket Motor". Journal of Propulsion and Power 30 (6): 1726–1727. doi:10.2514/1.B35455. 
  15. 15.0 15.1 Vincent & Earls 2011
  16. Anzalone, G.; Wijnen, B.; Pearce, Joshua M. (2015). "Multi-material additive and subtractive prosumer digital fabrication with a free and open-source convertible delta RepRap 3-D printer". Rapid Prototyping Journal 21 (5): 506–519. doi:10.1108/RPJ-09-2014-0113. https://www.academia.edu/15352556. 
  17. Felix Bopp (2010). Future Business Models by Additive Manufacturing. Verlag. ISBN 978-3-8366-8508-5. https://books.google.com/books?id=M_SmmUOwsWwC. Retrieved 4 July 2014. 
  18. Wu, D.; Thames, J.L.; Rosen, D.W.; Schaefer, D. (2013). "Enhancing the Product Realization Process with Cloud-Based Design and Manufacturing Systems." Transactions of the ASME". Journal of Computing and Information Science in Engineering 13 (4): 041004. doi:10.1115/1.4025257. 
  19. Wu, D.; Rosen, D.W.; Wang, L.; Schaefer, D. (2015). "Cloud-Based Design and Manufacturing: A New Paradigm in Digital Manufacturing and Design Innovation". Computer-Aided Design 59 (1): 1–14. doi:10.1016/j.cad.2014.07.006. http://opus.bath.ac.uk/46096/1/ACCEPTED_Cloud_based_design_and_manufacturing_A_new_paradigm_in_digital_manufacturing_and_design_innovation.pdf. 
  20. Wu, D.; Rosen, D.W.; Schaefer, D. (2015). "Scalability Planning for Cloud-Based Manufacturing Systems." Transactions of the ASME". Journal of Manufacturing Science and Engineering 137 (4): 040911. doi:10.1115/1.4030266. 
  21. "3D Hubs: Like Airbnb For 3D Printers". gizmodo. August 27, 2013. https://gizmodo.com/3d-hubs-like-airbnb-for-3d-printers-1207496555. Retrieved 2014-07-05. 
  22. Sterling, Bruce (2011-06-27). "Spime Watch: Dassault Systèmes' 3DVIA and Sculpteo (Reuters, June 27, 2011)". Wired. https://www.wired.com/beyond_the_beyond/2011/06/spime-watch-dassault-systemes%E2%80%99-3dvia-and-sculpteo/. Retrieved 2012-01-31.  Alt URL
  23. Vance, Ashlee (January 12, 2011). "The Wow Factor of 3-D Printing". The New York Times. https://www.nytimes.com/2011/01/13/technology/personaltech/13basics.html?_r=1. Retrieved 2012-01-31. 
  24. Zhang, Chenlong (2015). 3D PRINTING, OPEN-SOURCE TECHNOLOGY AND THEIR APPLICATIONS IN RESEARCH (Master of Science in Electrical Engineering thesis). Houghton, Michigan: Michigan Technological University. doi:10.37099/mtu.dc.etdr/62.
  25. "The action doll you designed, made real". makie.me. http://makie.me. Retrieved January 18, 2013. 
  26. "Cubify — Express Yourself in 3D". myrobotnation.com. http://www.myrobotnation.com/. Retrieved 2014-01-25. 
  27. "Turn Your Baby's Cry Into an iPhone Case". Bloomberg Businessweek. 2012-03-10. http://www.businessweek.com/articles/2012-03-10/turn-your-babys-cry-into-an-iphone-case. Retrieved 2013-02-20. 
  28. "3D Print Your Own Brain" (in en). https://www.instructables.com/3D-print-your-own-brain/. 
  29. "Nokia backs 3D printing for mobile phone cases". BBC News Online. 2013-02-18. https://www.bbc.co.uk/news/technology-21084430. Retrieved 2013-02-20. 
  30. Wohlers Report 2009, State of the Industry Annual Worldwide Progress Report on Additive Manufacturing, Wohlers Associates, ISBN:978-0-9754429-5-1
  31. Hopkinson, N & Dickens, P 2006, 'Emerging Rapid Manufacturing Processes', in Rapid Manufacturing; An industrial revolution for the digital age, Wiley & Sons Ltd, Chichester, W. Sussex
  32. Bray, Hiawatha (July 30, 2018). "Markforged of Watertown cleared in patent case". The Boston Globe. https://www.bostonglobe.com/business/2018/07/30/markforged-cleared-patent-case/jx5NSfnT6Zu2T5cK3J85bM/story.html. 
  33. 33.0 33.1 33.2 Symes, M. D.; Kitson, P. J.; Yan, J.; Richmond, C. J.; Cooper, G. J. T.; Bowman, R. W.; Vilbrandt, T.; Cronin, L. (2012). "Integrated 3D-printed reactionware for chemical synthesis and analysis". Nature Chemistry 4 (5): 349–354. doi:10.1038/nchem.1313. PMID 22522253. Bibcode2012NatCh...4..349S. 
  34. Lederle, Felix; Kaldun, Christian; Namyslo, Jan C.; Hübner, Eike G. (April 2016). "3D-Printing inside the Glovebox: A Versatile Tool for Inert-Gas Chemistry Combined with Spectroscopy". Helvetica Chimica Acta 99 (4): 255–266. doi:10.1002/hlca.201500502. PMID 27134300. 
  35. Vovrosh, Jamie; Georgios, Voulazeris; Plamen, G. Petrov; Ji, Zou; Youssef, Gaber; Laura, Benn; David, Woolger; Moataz, M. Attallah et al. (31 January 2018). "Additive manufacturing of magnetic shielding and ultra-high vacuum flange for cold atom sensors". Scientific Reports 8 (1): 2023. doi:10.1038/s41598-018-20352-x. PMID 29386536. Bibcode2018NatSR...8.2023V. 
  36. Wong, Venessa (28 January 2014). "A Guide to All the Food That's Fit to 3D Print (So Far)". Bloomberg.com. https://www.bloomberg.com/news/articles/2014-01-28/all-the-food-thats-fit-to-3d-print-from-chocolates-to-pizza. 
  37. "Did BeeHex Just Hit 'Print' to Make Pizza at Home?". 2016-05-27. http://www.huffingtonpost.co.uk/cohan-chew/did-beehex-just-hit-print_b_10108424.html. Retrieved 28 May 2016. 
  38. "Foodini 3D Printer Cooks Up Meals Like the Star Trek Food Replicator". http://inhabitat.com/foodini-3d-printer-will-make-all-your-meals-for-you-like-the-star-trek-food-replicator. Retrieved 27 January 2015. 
  39. "3D Printing: Food in Space". NASA. http://www.nasa.gov/directorates/spacetech/home/feature_3d_food_prt.htm. Retrieved 2015-09-30. 
  40. "3D Printed Food System for Long Duration Space Missions". https://sbir.gsfc.nasa.gov/SBIR/abstracts/12/sbir/phase1/SBIR-12-1-H12.04-9357.html?solicitationId=SBIR_12_P1.. 
  41. "NOVAMEAT Unveils New Plant-Based 3D Printed Beef Steak". 2020-01-10. https://vegconomist.com/hot-off-the-vegan-press/novameat-unveils-new-plant-based-3d-printed-beef-steak/. 
  42. Erickson, D. M.; Chance, D.; Schmitt, S.; Mathis, J. (1 September 1999). "An opinion survey of reported benefits from the use of stereolithographic models". J. Oral Maxillofac. Surg. 57 (9): 1040–1043. doi:10.1016/s0278-2391(99)90322-1. PMID 10484104. https://zenodo.org/record/1259977. 
  43. Eppley, B. L.; Sadove, A. M. (1 November 1998). "Computer-generated patient models for reconstruction of cranial and facial deformities". J Craniofac Surg 9 (6): 548–556. doi:10.1097/00001665-199811000-00011. PMID 10029769. 
  44. Hirsch, DL; Garfein, ES; Christensen, AM; Weimer, KA; Saddeh, PB; Levine, JP (2009). "Use of computer-aided design and computer-aided manufacturing to produce orthognathically ideal surgical outcomes: a paradigm shift in head and neck reconstruction". J Oral Maxillofac Surg 67 (10): 2115–22. doi:10.1016/j.joms.2009.02.007. PMID 19761905. 
  45. Anwar, Shafkat; Singh, Gautam K.; Varughese, Justin; Nguyen, Hoang; Billadello, Joseph J.; Sheybani, Elizabeth F.; Woodard, Pamela K.; Manning, Peter et al. (2017). "3D Printing in Complex Congenital Heart Disease". JACC: Cardiovascular Imaging 10 (8): 953–956. doi:10.1016/j.jcmg.2016.03.013. PMID 27450874. 
  46. Matsumoto, Jane S.; Morris, Jonathan M.; Foley, Thomas A.; Williamson, Eric E.; Leng, Shuai; McGee, Kiaran P.; Kuhlmann, Joel L.; Nesberg, Linda E. et al. (1 November 2015). "Three-dimensional Physical Modeling: Applications and Experience at Mayo Clinic". Radiographics 35 (7): 1989–2006. doi:10.1148/rg.2015140260. PMID 26562234. 
  47. Mitsouras, Dimitris; Liacouras, Peter; Imanzadeh, Amir; Giannopoulos, Andreas A.; Cai, Tianrun; Kumamaru, Kanako K.; George, Elizabeth; Wake, Nicole et al. (1 November 2015). "Medical 3D Printing for the Radiologist". RadioGraphics 35 (7): 1965–1988. doi:10.1148/rg.2015140320. PMID 26562233. 
  48. Zopf, David A.; Hollister, Scott J.; Nelson, Marc E.; Ohye, Richard G.; Green, Glenn E. (23 May 2013). "Bioresorbable Airway Splint Created with a Three-Dimensional Printer". N Engl J Med 368 (21): 2043–2045. doi:10.1056/NEJMc1206319. PMID 23697530. 
  49. Malinauskas, Mangirdas; Rekštytė, Sima; Lukoševičius, Laurynas; Butkus, Simas; Balčiūnas, Evaldas; Pečiukaitytė, Milda; Baltriukienė, Daiva; Bukelskienė, Virginija et al. (2014). "3D Microporous Scaffolds Manufactured via Combination of Fused Filament Fabrication and Direct Laser Writing Ablation". Micromachines (MDPI) 5 (4): 839–858. doi:10.3390/mi5040839. 
  50. "Transplant jaw made by 3D printer claimed as first". BBC. 2012-02-06. https://www.bbc.com/news/technology-16907104. 
  51. Rob Stein (2013-03-17). "Doctors Use 3-D Printing To Help A Baby Breathe". NPR. https://www.npr.org/blogs/health/2014/03/17/289042381/doctors-use-3-d-printing-to-help-a-baby-breathe. 
  52. Moore, Calen (11 February 2014). "Surgeons have implanted a 3-D-printed pelvis into a U.K. cancer patient". fiercemedicaldevices.com. http://www.fiercemedicaldevices.com/story/surgeons-have-implanted-3-d-printed-pelvis-uk-cancer-patient/2014-02-11. Retrieved 2014-03-04. 
  53. Keith Perry (2014-03-12). "Man makes surgical history after having his shattered face rebuilt using 3D printed parts". The Daily Telegraph (London). https://www.telegraph.co.uk/health/10691753/Man-makes-surgical-history-after-having-his-shattered-face-rebuilt-using-3D-printed-parts.html/2014-03-12. Retrieved 2014-03-12. [|permanent dead link|dead link}}]
  54. "Boy gets kidney transplant thanks to 3D printing" (in en-GB). Sky News. https://news.sky.com/video/3d-printing-assists-kidney-transplant-in-boy-11374845. 
  55. Ahlinder, Astrid (2021). Degradable copolymers in additive manufacturing: controlled fabrication of pliable scaffolds. KTH Royal Institute of Technology. ISBN 978-91-7873-778-9. http://kth.diva-portal.org/smash/get/diva2:1530592/FULLTEXT01.pdf. 
  56. "TU Delft Researchers Discuss Microstructural Optimization for 3D Printing Trabecular Bone". 18 January 2019. https://3dprint.com/234196/researchers-discuss-microstructural-optimization-for-3d-printing/. 
  57. "How Doctors Can Use 3D Printing to Help Their Patients Recover Faster". PharmaNext. https://knect365.com/pharmanext/article/a98a315a-716d-4116-bcbf-8d92825743ca/how-doctors-can-use-3d-printing-to-help-their-patients-recover-faster. 
  58. Cho, Kyu-Jin; Koh, Je-Sung; Kim, Sangwoo; Chu, Won-Shik; Hong, Yongtaek; Ahn, Sung-Hoon (2009). "Review of manufacturing processes for soft biomimetic robots". International Journal of Precision Engineering and Manufacturing 10 (3): 171–181. doi:10.1007/s12541-009-0064-6. 
  59. Rus, Daniela; Tolley, Michael T. (2015). "Design, fabrication and control of soft robots". Nature 521 (7553): 467–475. doi:10.1038/nature14543. PMID 26017446. Bibcode2015Natur.521..467R. http://dspace.mit.edu/bitstream/1721.1/100772/1/SoftRoboticsReview-FinalAuthorVersion.pdf. 
  60. Markovitch, Omer; Ottelé, Jim; Veldman, Obe; Otto, Sijbren (2020). "Automated device for continuous stirring while sampling in liquid chromatography systems". Communications Chemistry 3 (1): 180. doi:10.1038/s42004-020-00427-5. PMID 36703458. 
  61. "How is 3D Printing Used in the Medical Industry?". https://www.raise3d.com/academy/how-is-3d-printing-used-in-the-medical-industry/. 
  62. Cohen, Daniel L.; Malone, Evan; Lipson, Hod; Bonassar, Lawrence J. (1 May 2006). "Direct freeform fabrication of seeded hydrogels in arbitrary geometries". Tissue Eng. 12 (5): 1325–1335. doi:10.1089/ten.2006.12.1325. PMID 16771645. 
  63. "RFA-HD-15-023: Use of 3-D Printers for the Production of Medical Devices (R43/R44)". NIH grants. http://grants.nih.gov/grants/guide/rfa-files/RFA-HD-15-023.html. Retrieved 2015-09-30. 
  64. Young, Matthew (November 30, 2015). "7 Ways 3D Printing Is Disrupting The Medical Industry". http://3dmasterminds.com/7-ways-3d-printing-is-disrupting-the-medical-industry/. 
  65. "Print your own medicine". http://www.ted.com/talks/lee_cronin_print_your_own_medicine.html. 
  66. 66.0 66.1 Mohammed, Abdul Aleem; Algahtani, Mohammed S.; Ahmad, Mohammad Zaki; Ahmad, Javed; Kotta, Sabna (December 2021). "3D Printing in medicine: Technology overview and drug delivery applications" (in en). Annals of 3D Printed Medicine. 3D-Printed Medicine: From today's accomplishments to tomorrow's promises 4: 100037. doi:10.1016/j.stlm.2021.100037. ISSN 2666-9641. 
  67. Goole, Jonathan; Amighi, Karim (2016-02-29). "3D printing in pharmaceutics: A new tool for designing customized drug delivery systems" (in en). International Journal of Pharmaceutics 499 (1): 376–394. doi:10.1016/j.ijpharm.2015.12.071. ISSN 0378-5173. PMID 26757150. https://www.sciencedirect.com/science/article/pii/S0378517315304622. 
  68. "3D-printed sugar network to help grow artificial liver". BBC News. 2012-07-02. https://www.bbc.com/news/technology-18677627. 
  69. "Invetech helps bring bio-printers to life". Westwick-Farrow Media. December 11, 2009. http://lifescientist.com.au/content/biotechnology/news/invetech-helps-bring-bio-printers-to-life-413047968. Retrieved December 31, 2013. 
  70. "Building body parts with 3D printing". 2010-05-22. http://www.theengineer.co.uk/in-depth/analysis/building-body-parts-with-3d-printing/1002542.article. 
  71. Silverstein, Jonathan. "'Organ Printing' Could Drastically Change Medicine (ABC News, 2006)". https://abcnews.go.com/Technology/story?id=1603783&page=1. Retrieved 2012-01-31. 
  72. ThomasMar 25, 2014, Dan (March 25, 2014). "Engineering Ourselves – The Future Potential Power of 3D-Bioprinting?". Engineering.com. http://www.engineering.com/3DPrinting/3DPrintingArticles/ArticleID/7379/Engineering-Ourselves-The-Future-Potential-Power-of-3D-Bioprinting.aspx. 
  73. "Chinese Scientists Are 3D Printing Ears and Livers – With Living Tissue". Tech Biz. The Diplomat. 2013-08-15. https://thediplomat.com/tech-biz/2013/08/15/chinese-scientists-are-3d-printing-ears-and-livers-with-living-tissue/. Retrieved 2013-10-30. 
  74. "How do they 3D print kidney in China". http://www.3ders.org/articles/20130815-how-do-they-3d-print-kidney-in-china.html. Retrieved 2013-10-30. 
  75. "Inverness girl Hayley Fraser gets 3D-printed hand" (in en-GB). BBC News. 2014-10-01. https://www.bbc.com/news/uk-scotland-highlands-islands-29441115. 
  76. "3D-Printed Foot Lets Crippled Duck Walk Again". 2 July 2013. http://mashable.com/2013/07/02/3d-printed-duck-foot. 
  77. Flaherty, Joseph (2013-07-30). "So Cute: Hermit Crabs Strut in Stylish 3-D Printed Shells". Wired. https://www.wired.com/design/2013/07/3-d-printed-hermit-crab-shells-based-on-city-skylines. 
  78. "3D Systems preps for global launch of 'printed' knee implants for dogs". FierceAnimalHealth.com. http://www.fierceanimalhealth.com/story/3d-systems-preps-global-launch-printed-knee-implants-dogs/2015-03-20. Retrieved 13 April 2015. 
  79. Saxena, Varun (February 2, 2015). "FDA clears 3-D printed device for minimally invasive foot surgery". FierceMedicalDevices.com. http://www.fiercemedicaldevices.com/story/fda-clears-3-d-printed-device-minimally-invasive-foot-surgery/2015-02-02. Retrieved 14 April 2015. 
  80. Yue, J; Zhao, P; Gerasimov, JY; de Lagemaat, M; Grotenhuis, A; Rustema-Abbing, M; van der Mei, HC; Busscher, HJ et al. (2015). "3D-Printable Antimicrobial Composite Resins". Adv. Funct. Mater. 25 (43): 6756–6767. doi:10.1002/adfm.201502384. https://research.rug.nl/en/publications/d24a5383-0aeb-4d86-af6d-641492a66526. 
  81. "Mish's Global Economic Trend Analysis: 3D-Printing Spare Human Parts; Ears and Jaws Already, Livers Coming Up; Need an Organ? Just Print It". Globaleconomicanalysis.blogspot.co.uk. 2013-08-18. http://globaleconomicanalysis.blogspot.co.uk/2013/08/3d-printing-spare-human-parts-ears-and.html. Retrieved 2013-10-30. 
  82. Aias, L (11 Aug 2016). "Grecia, the toucan with the prosthetic beak, now receiving visitors". The Tico Times. http://www.ticotimes.net/2016/08/11/grecia-toucan-new-cage. 
  83. Kleinman, Zoe (2020-03-16). "Coronavirus: 3D printers save hospital with valves" (in en-GB). BBC News. https://www.bbc.com/news/technology-51911070. 
  84. Krassenstein, Brian (2015-05-10). "Researchers 3D Print Odd Shaped Pills On A MakerBot, Completely Changing Drug Release Rates" (in en-US). https://3dprint.com/64223/3d-printed-drugs/. 
  85. Palmer, Eric (3 August 2015). "Company builds plant for 3DP pill making as it nails first FDA approval". fiercepharmamanufacturing.com. http://www.fiercepharmamanufacturing.com/story/fda-approves-seizure-drug-made-3-d-technology/2015-08-03. Retrieved 4 August 2015. 
  86. Kuehn, Steven E. (September 2015). "I'm Printing Your Prescription Now, Ma'am". Pharmaceutical Manufacturing (Putnam Media): 7. 
  87. 87.0 87.1 Seoane-Viaño, Iria; Januskaite, Patricija; Alvarez-Lorenzo, Carmen; Basit, Abdul W.; Goyanes, Alvaro (April 2021). "Semi-solid extrusion 3D printing in drug delivery and biomedicine: Personalised solutions for healthcare challenges" (in en). Journal of Controlled Release 332: 367–389. doi:10.1016/j.jconrel.2021.02.027. PMID 33652114. https://linkinghub.elsevier.com/retrieve/pii/S0168365921001000. 
  88. Trenfield, Sarah J; Awad, Atheer; Madla, Christine M; Hatton, Grace B; Firth, Jack; Goyanes, Alvaro; Gaisford, Simon; Basit, Abdul W (2019-10-03). "Shaping the future: recent advances of 3D printing in drug delivery and healthcare" (in en). Expert Opinion on Drug Delivery 16 (10): 1081–1094. doi:10.1080/17425247.2019.1660318. ISSN 1742-5247. PMID 31478752. https://discovery.ucl.ac.uk/id/eprint/10082473/1/Gaisford_AAM_Shaping%20the%20future-%20Recent%20advances%20of%203D%20printing%20in%20drug%20delivery%20and%20healthcare%20R1.pdf. 
  89. Uziel, Almog; Shpigel, Tal; Goldin, Nir; Lewitus, Dan Y (May 2019). "Three-dimensional printing for drug delivery devices: a state-of-the-art survey" (in en). Journal of 3D Printing in Medicine 3 (2): 95–109. doi:10.2217/3dp-2018-0023. ISSN 2059-4755. 
  90. Melocchi, Alice; Uboldi, Marco; Maroni, Alessandra; Foppoli, Anastasia; Palugan, Luca; Zema, Lucia; Gazzaniga, Andrea (April 2020). "3D printing by fused deposition modeling of single- and multi-compartment hollow systems for oral delivery – A review" (in en). International Journal of Pharmaceutics 579: 119155. doi:10.1016/j.ijpharm.2020.119155. PMID 32081794. 
  91. Melocchi, Alice; Uboldi, Marco; Cerea, Matteo; Foppoli, Anastasia; Maroni, Alessandra; Moutaharrik, Saliha; Palugan, Luca; Zema, Lucia et al. (2020-10-01). "A Graphical Review on the Escalation of Fused Deposition Modeling (FDM) 3D Printing in the Pharmaceutical Field" (in en). Journal of Pharmaceutical Sciences 109 (10): 2943–2957. doi:10.1016/j.xphs.2020.07.011. ISSN 0022-3549. PMID 32679215. http://www.sciencedirect.com/science/article/pii/S0022354920303774. 
  92. Tienderen, Gilles Sebastiaan van; Berthel, Marius; Yue, Zhilian; Cook, Mark; Liu, Xiao; Beirne, Stephen; Wallace, Gordon G. (2018-09-02). "Advanced fabrication approaches to controlled delivery systems for epilepsy treatment". Expert Opinion on Drug Delivery 15 (9): 915–925. doi:10.1080/17425247.2018.1517745. ISSN 1742-5247. PMID 30169981. https://doi.org/10.1080/17425247.2018.1517745. 
  93. 93.0 93.1 "3D Printed Clothing Becoming a Reality". Resins Online. 2013-06-17. http://www.resins-online.com/blog/3d-printed-clothing/. Retrieved 2013-10-30. 
  94. Michael Fitzgerald (2013-05-28). "With 3-D Printing, the Shoe Really Fits". MIT Sloan Management Review. http://sloanreview.mit.edu/article/with-3-d-printing-the-shoe-really-fits/. Retrieved 2013-10-30. 
  95. Sharma, Rakesh (2013-09-10). "3D Custom Eyewear The Next Focal Point For 3D Printing". Forbes. https://www.forbes.com/sites/rakeshsharma/2013/09/10/custom-eyewear-the-next-focal-point-for-3d-printing/. Retrieved 2013-09-10. 
  96. Parker C. J. (2015). The Human Acceptance of 3D Printing in Fashion Paradox: Is mass customisation a bridge too far? IWAMA 2015: 5th International Workshop of Advanced Manufacturing and Automation. Shanghai, China.
  97. Matich, Danielle (2015-07-08). "Karl Lagerfeld Showcases 3D Printed Chanel at Paris Fashion Week". https://3dprintingindustry.com/news/karl-lagerfeld-showcases-3d-printed-chanel-fashion-at-paris-fashion-week-53000/. 
  98. Howarth, Dan (21 August 2014). "Noa Raviv uses grid patterns and 3D printing in fashion collection". http://www.dezeen.com/2014/08/21/noa-raviv-hard-copy-fashion-collection-grid-patterns-3d-printing/. 
  99. "Fashion and technology will inevitably become one" (in en-US). 2017-05-23. https://www.engadget.com/2017-05-23-the-future-of-fashion-and-technology.html. 
  100. "Meet Teen Vogue's 21 Under 21: The Young People Beating the Odds" (in en-US). 2020-11-24. https://www.teenvogue.com/story/21-under-21-2020. 
  101. Lamar, Cayla (29 May 2020). "Meet the College Freshman Helping Frontline Hospital Workers - Ms. Magazine". https://msmagazine.com/2020/05/29/meet-the-college-freshman-helping-frontline-hospital-workers/. 
  102. "Jewelry - 3D Printing - EnvisionTEC". EnvisionTEC.com. https://envisiontec.com/3d-printing-industries/professional/jewelry/. 
  103. "Custom Bobbleheads". http://www.headbobble.com/. Retrieved 13 January 2015. 
  104. Wainwright, Oliver (25 January 2013). "3D-print your face in chocolate for that special Valentine's Day gift". The Guardian. https://www.theguardian.com/artanddesign/architecture-design-blog/2013/jan/25/3d-print-chocolate-face-valentines-day. 
  105. "Koenigsegg One:1 Comes With 3D Printed Parts". Business Insider. http://www.businessinsider.com/koenigsegg-one1-comes-with-3d-printed-parts-2014-2. Retrieved 2014-05-14. 
  106. Gugelmin, Felipe (3 November 2010). "Conheça o Urbee, primeiro carro a ser fabricado com uma impressora 3D" (in pt-BR). https://www.tecmundo.com.br/impressora/6260-conheca-o-urbee-primeiro-carro-a-ser-fabricado-com-uma-impressora-3d.htm. 
  107. Eternity, Max (November 23, 2014). "The Urbee 3D-Printed Car: Coast to Coast on 10 Gallons?". http://truth-out.org/news/item/27430-the-urbee-3d-printed-car-coast-to-coast-on-10-gallons. 
  108. 3D Printed Car Creator Discusses Future of the Urbee on YouTube (restricted access)
  109. "Local Motors shows Strati, the world's first 3D-printed car". 13 January 2015. http://fortune.com/2015/01/13/local-motors-shows-strati-the-worlds-first-3d-printed-car/. 
  110. Walker, Daniela (2016-03-24). "Local Motors wants to 3D-print your next car out of plastic". Wired UK. https://www.wired.co.uk/article/3d-printed-cars-local-motors-lm3d. 
  111. Warren, Tamara (16 June 2016). "This autonomous, 3D-printed bus starts giving rides in Washington, DC today". https://www.theverge.com/2016/6/16/11952072/local-motors-3d-printed-self-driving-bus-washington-dc-launch. 
  112. "Building Olli: Why "Second-degree DDM" is critical to the process - Local Motors". 24 June 2016. https://cocreate.localmotors.com/blog/post/building-olli-why-second-degree-ddm-is-critical-to-the-process/2052/. 
  113. Simmons, Dan (2015-05-06). "Airbus had 1,000 parts 3D printed to meet deadline". BBC. https://www.bbc.com/news/technology-32597809. 
  114. Zitun, Yoav (2015-07-27). "The 3D printer revolution comes to the IAF". Ynetnews (Ynet News). http://www.ynetnews.com/articles/0,7340,L-4684682,00.html. 
  115. "GE Team Secretly Printed a Helicopter Engine, Replacing 900 Parts with 16" (in en). 2023-11-21. https://www.additivemanufacturing.media/articles/ge-team-secretly-printed-a-helicopter-engine-replacing-900-parts-with-16. 
  116. Greenberg, Andy (2012-08-23). "'Wiki Weapon Project' Aims To Create A Gun Anyone Can 3D-Print At Home". Forbes. https://www.forbes.com/sites/andygreenberg/2012/08/23/wiki-weapon-project-aims-to-create-a-gun-anyone-can-3d-print-at-home/. Retrieved 2012-08-27. 
  117. Poeter, Damon (2012-08-24). "Could a 'Printable Gun' Change the World?". PC Magazine. https://www.pcmag.com/article2/0,2817,2408899,00.asp. Retrieved 2012-08-27. 
  118. "Blueprints for 3-D printer gun pulled off website". Austin American-Statesman. May 2013. http://www.statesman.com/news/news/blueprints-for-3-d-printer-gun-pulled-off-website/nXnbG/. Retrieved 2013-10-30. 
  119. Samsel, Aaron (2013-05-23). "3D Printers, Meet Othermill: A CNC machine for your home office (VIDEO)". Guns.com. http://www.guns.com/2013/05/23/3d-printers-meet-othermill-a-cnc-machine-for-your-home-office/. Retrieved 2013-10-30. 
  120. "The Third Wave, CNC, Stereolithography, and the end of gun control". Popehat. 2011-10-06. http://www.popehat.com/2011/10/06/the-third-wave-cnc-stereolithography-and-the-end-of-gun-control/. Retrieved 2013-10-30. 
  121. Rosenwald, Michael S. (2013-02-25). "Weapons made with 3-D printers could test gun-control efforts". Washington Post. https://www.washingtonpost.com/local/weapons-made-with-3-d-printers-could-test-gun-control-efforts/2013/02/18/9ad8b45e-779b-11e2-95e4-6148e45d7adb_story.html?hpid=z1. 
  122. "Making guns at home: Ready, print, fire". The Economist. 2013-02-16. https://www.economist.com/news/united-states/21571910-regulatory-and-legal-challenges-posed-3d-printing-gun-parts-ready-print-fire. Retrieved 2013-10-30. 
  123. Rayner, Alex (6 May 2013). "3D-printable guns are just the start, says Cody Wilson". The Guardian (London). https://www.theguardian.com/world/shortcuts/2013/may/06/3d-printable-guns-cody-wilson. 
  124. Manjoo, Farhad (2013-05-08). "3-D-printed gun: Yes, it will be possible to make weapons with 3-D printers. No, that doesn't make gun control futile". Slate. http://www.slate.com/articles/technology/technology/2013/05/_3_d_printed_gun_yes_it_will_be_possible_to_make_weapons_with_3_d_printers.single.html. Retrieved 2013-10-30. 
  125. 125.0 125.1 Franzen, Carl (October 21, 2014). "3D-printed gun maker in Japan sentenced to two years in prison". The Verge. https://www.theverge.com/2014/10/20/7022809/3d-printed-gun-maker-in-japan-sentenced-2-years. 
  126. Finley, Klint (2014-04-02). "The Almost Completely Open Source Laptop Goes on Sale". Wired. https://www.wired.com/2014/04/novena/. 
  127. McCue, TJ (October 22, 2014). "Robots And 3D Printing". Forbes. https://www.forbes.com/sites/tjmccue/2014/10/22/robots-and-3d-printing/. 
  128. "Best 3D Printing Pens" (in en). https://all3dp.com/1/best-3d-pen-reviews-price-3d-pens-buy-3d-printing-pen/. 
  129. Printoo: Giving Life to Everyday Objects (paper-thin, flexible Arduino-compatible modules)
  130. 3&DBot: An Arduino 3D printer-robot with wheels
  131. Calin, Dragos (January 19, 2015). "A lesson in building a custom 3D printed humanoid robot". http://www.intorobotics.com/lesson-building-custom-3d-printed-humanoid-robot/. 
  132. Ni, Yujie; Ru, Ji; Kaiwen, Long; Ting, Bu; Kejian, Chen; Songlin, Zhuang (2017). "A review of 3D-printed sensors". Applied Spectroscopy Reviews 52 (7): 1–30. doi:10.1080/05704928.2017.1287082. Bibcode2017ApSRv..52..623N. 
  133. Tibbits, Skylar (2014). "4D printing: multi‐material shape change". Architectural Design 84 (1): 116–121. doi:10.1002/ad.1710. 
  134. Goswami, Debkalpa; Liu, Shuai; Pal, Aniket; Silva, Lucas G.; Martinez, Ramses V. (2019-04-08). "3D‐Architected Soft Machines with Topologically Encoded Motion" (in en). Advanced Functional Materials 29 (24): 1808713. doi:10.1002/adfm.201808713. ISSN 1616-301X. 
  135. "The RepRap's Heritage". 15 June 2011. http://www.fabbaloo.com/blog/2011/6/15/the-repraps-heritage.html. 
  136. Kelly, Heather (July 31, 2013). "Study: At-home 3D printing could save consumers "thousands"". CNN. http://whatsnext.blogs.cnn.com/2013/07/31/study-at-home-3-d-printing-could-save-consumers-thousands/. 
  137. Wittbrodt, B. T.; Glover, A. G.; Laureto, J.; Anzalone, G. C.; Oppliger, D.; Irwin, J. L.; Pearce, J. M. (2013). "Life-cycle economic analysis of distributed manufacturing with open-source 3-D printers". Mechatronics 23 (6): 713–726. doi:10.1016/j.mechatronics.2013.06.002. https://digitalcommons.mtu.edu/materials_fp/48. 
  138. Séquin, C. H. (2005). "Rapid prototyping". Communications of the ACM 48 (6): 66. doi:10.1145/1064830.1064860. 
  139. Guth, Robert A.. "How 3-D Printing Figures To Turn Web Worlds Real (The Wall Street Journal, December 12, 2007)". http://www.zcorp.com/documents/194_2007-1212-Wall%20Street%20Journal-3DP%20Turns%20Web%20World%20Real.pdf. Retrieved 2012-01-31. 
  140. "Bathsheba Grossman's Quin.MGX for Materialise". Time. 2008-04-03. http://www.time.com/time/specials/2007/article/0,28804,1727737_1727680_1727556,00.html. Retrieved 2013-10-30. 
  141. Williams, Holly (2011-08-28). "Object lesson: How the world of decorative art is being revolutionised by 3D printing (The Independent, 28 August 2011)". London. https://www.independent.co.uk/arts-entertainment/art/features/object-lesson-how-the-world-of-decorative-art-is-being-revolutionised-by-3d-printing-2342500.html. Retrieved 2012-01-31. 
  142. Bennett, Neil (November 13, 2013). "How 3D printing is helping doctors mend you better". TechAdvisor. http://www.techadvisor.co.uk/features/printing/how-3d-printing-is-helping-doctors-mend-you-better/. 
  143. "MIT's Neri Oxman on the True Beauty of 3D Printed Glass". Architect Magazine. 2015-08-28. http://www.architectmagazine.com/technology/mits-neri-oxman-on-the-true-beauty-of-3d-printed-glass_o. Retrieved 2017-03-10. 
  144. Cignoni, P.; Scopigno, R. (2008). "Sampled 3D models for CH applications". Journal on Computing and Cultural Heritage 1: 1–23. doi:10.1145/1367080.1367082. 
  145. Pandey, S.; Gupta, B.; Nahata, A. (2013). "Complex Geometry Plasmonic Terahertz Waveguides Created via 3D Printing". Cleo: 2013. pp. CTh1K.CTh12. doi:10.1364/CLEO_SI.2013.CTh1K.2. ISBN 978-1-55752-972-5. 
  146. "I have been working on my #solidsounds... - Janine Ling Carr - Facebook". https://www.facebook.com/j9.beatbox/posts/1391340137560726. 
  147. Fletcher, JC (August 28, 2008). "Virtually Overlooked: Mario Artist". http://www.joystiq.com/2008/08/28/virtually-overlooked-mario-artist/. Retrieved 2014-06-14. 
  148. "Mario Artist: Polygon Studio". http://64dd.net/modules/games/?system=64dd&type=released&section=main&id=7. Retrieved 2014-06-14. 
  149. ewilhelm. "3D printed clock and gears". Instructables.com. http://www.instructables.com/id/3D-Printed-Clock-and-Gears/. Retrieved 2013-10-30. 
  150. "Successful Sumpod 3D printing of a herringbone gear". 3d-printer-kit.com. 2012-01-23. http://3d-printer-kit.com/?p=565. Retrieved 2013-10-30. 
  151. ""backscratcher" 3D Models to Print - yeggi". http://www.yeggi.com/q/backscratcher/?s=tt. 
  152. Matisons, Michelle (2015-12-10). "CONTEXT Report: Half a Million 3D Printers Sold Worldwide Since 1980s" (in en-US). https://3dprint.com/108950/context-research-update/. 
  153. Simonite, Tom. "Desktop fabricator may kick-start home revolution". https://www.newscientist.com/article/dn10922-desktop-fabricator-may-kickstart-home-revolution.html. 
  154. Sanderson, Katharine. "Make your own drugs with a 3D printer". https://www.newscientist.com/article/dn21709-make-your-own-drugs-with-a-3d-printer.html?full=true. 
  155. Cronin, Lee (2012-04-17). "3D printer developed for drugs" (video interview [5:21]). BBC News Online (Glasgow University). https://www.bbc.co.uk/news/uk-scotland-17744314. Retrieved 2013-03-06. 
  156. D'Aveni, Richard (March 2013). "3-D Printing Will Change the World". Harvard Business Review. http://hbr.org/2013/03/3-d-printing-will-change-the-world/. Retrieved 2014-10-08. 
  157. "3D printable SLR brings whole new meaning to "digital camera"". Gizmag.com. 9 July 2013. http://www.gizmag.com/openreflex-3d-printed-slr/28208/. Retrieved 2013-10-30. 
  158. Schelly, C., Anzalone, G., Wijnen, B., & Pearce, J. M. (2015). "Open-source 3-D printing Technologies for education: Bringing Additive Manufacturing to the Classroom." Journal of Visual Languages & Computing.
  159. Grujović, N., Radović, M., Kanjevac, V., Borota, J., Grujović, G., & Divac, D. (2011, September). "3D printing technology in education environment." In 34th International Conference on Production Engineering (pp. 29–30).
  160. Mercuri, R., & Meredith, K. (2014, March). "An educational venture into 3D Printing." In Integrated STEM Education Conference (ISEC), 2014 IEEE (pp. 1–6). IEEE.
  161. Students Use 3D Printing to Reconstruct Dinosaurs on YouTube
  162. Gonzalez-Gomez, J., Valero-Gomez, A., Prieto-Moreno, A., & Abderrahim, M. (2012). "A new open source 3d-printable mobile robotic platform for education." In Advances in Autonomous Mini Robots (pp. 49–62). Springer Berlin Heidelberg.
  163. J. Irwin, J.M. Pearce, D. Opplinger, and G. Anzalone. The RepRap 3-D Printer Revolution in STEM Education, 121st ASEE Annual Conference and Exposition, Indianapolis, IN. Paper ID #8696 (2014).
  164. 164.0 164.1 Zhang, C.; Anzalone, N. C.; Faria, R. P.; Pearce, J. M. (2013). De Brevern, Alexandre G. ed. "Open-Source 3D-Printable Optics Equipment". PLOS ONE 8 (3): e59840. doi:10.1371/journal.pone.0059840. PMID 23544104. Bibcode2013PLoSO...859840Z. 
  165. "3D Printing in the Classroom to Accelerate Adoption of Technology". http://on3dprinting.com/2013/02/20/3d-printing-in-the-classroom-to-accelerate-adoption-of-technology/. 
  166. Lederle, Felix; Hübner, Eike G. (7 April 2020). "Organic chemistry lecture course and exercises based on true scale models". Chemistry Teacher International 2 (2). doi:10.1515/cti-2019-0006. 
  167. Kostakis, V.; Niaros, V.; Giotitsas, C. (2014). "Open source 3D printing as a means of learning: An educational experiment in two high schools in Greece". Telematics and Informatics 32: 118–128. doi:10.1016/j.tele.2014.05.001. 
  168. Pearce, Joshua M. 2012. "Building Research Equipment with Free, Open-Source Hardware." Science 337 (6100): 1303–1304
  169. Islam, Muhammed Kamrul; Hazell, Paul J.; Escobedo, Juan P.; Wang, Hongxu (2021-07-01). "Biomimetic armour design strategies for additive manufacturing: A review" (in en). Materials & Design 205: 109730. doi:10.1016/j.matdes.2021.109730. ISSN 0264-1275. 
  170. "Assessment of Friction Stir Welding on Aluminium 3D Printing Materials". IJRTE. https://www.ijrte.org/wp-content/uploads/papers/v8i4/D5418118419.pdf. Retrieved 18 Dec 2019. 
  171. "Underwater City: 3D Printed Reef Restores Bahrain's Marine Life". ptc.com. 2013-08-01. http://blogs.ptc.com/2013/08/01/underwater-city-3d-printed-reef-restores-bahrains-marine-life/. Retrieved 2013-10-30. 
  172. Scopigno, R.; Cignoni, P.; Pietroni, N.; Callieri, M.; Dellepiane, M. (November 2015). "Digital Fabrication Techniques for Cultural Heritage: A Survey". Computer Graphics Forum 36: 6–21. doi:10.1111/cgf.12781. https://www.researchgate.net/publication/284233238. 
  173. "Museum uses 3D printing to take fragile maquette by Thomas Hart Benton on tour through the States". July 14, 2015. http://www.3ders.org/articles/20150714-museum-uses-3d-printing-to-take-fragile-maquette-by-thomas-hart-benton-on-tour.html. 
  174. Roth, Martin (2016-06-14). "The art of copying". Prospect. http://www.prospectmagazine.co.uk/arts-and-books/the-art-of-copying-digital-archeology-palmyra. 
  175. Jackson, Beau (2017-02-23). "Inside private art collections with Scan the World". https://3dprintingindustry.com/news/inside-private-art-collections-scan-world-106451/. 
  176. Vincent, James (2014-11-04). "British Museum releases 3D printer scans of artefacts". https://www.independent.co.uk/life-style/gadgets-and-tech/british-museum-releases-scans-of-artefacts-to-let-you-3d-print-your-own-museum-at-home-9837654.html. 
  177. "Threeding Uses Artec 3D Scanning Technology to Catalog 3D Models for Bulgaria's National Museum of Military History". 3dprint.com. 2015-02-20. http://3dprint.com/45699/threeding-artec-museum/. 
  178. "$5,000 3D printer prints carbon-fiber parts". MarkForged. http://machinedesign.com/3d-printing/markforged-5000-3d-printer-prints-carbon-fiber-parts. 
  179. "Researchers at UC Berkeley Create Bloom First Ever 3D-printed Cement Structure That Stands 9 Feet Tall". KPIX-TV. 6 March 2015. http://sanfrancisco.cbslocal.com/2015/03/06/researchers-at-uc-berkeley-create-bloom-first-ever-3-d-printed-cement-structure-that-stands-9-feet-tall/. Retrieved 23 April 2015. 
  180. Chino, Mike (9 March 2015). "UC Berkeley unveils 3D-printed "Bloom" building made of powdered cement". http://inhabitat.com/worlds-largest-3d-printed-building-made-from-powdered-cement-unveiled-at-uc-berkeley/. Retrieved 23 April 2015. 
  181. Fixsen, Anna (6 March 2015). "Print it Real Good: First Powder-Based 3D Printed Cement Structure Unveiled". ArchitecturalRecord.com. http://archrecord.construction.com/news/2015/03/150306-Print-it-Real-Good-First-powder-based-3D-Print-Cement-Structure-unveiled-at-UC-Berkeley.asp. Retrieved 23 April 2015. 

Sources