Engineering:Scratch awl
A scratch awl is a woodworking layout and point-making tool. It is used to scribe a line to be followed by a hand saw or chisel when making woodworking joints and other operations.[1]
The scratch awl is basically a steel spike with its tip sharpened to a fine point. The tip of the spike is drawn across the timber, leaving a shallow groove. It may also be used to mark a point by pressing the tip into the timber.[2] It is generally used when dimensioning and for laying out with the grain. It may also be used across the grain. However, a marking knife is preferred for this operation.[1]
Scratch awls are traditionally used in leather crafting to trace patterns onto leather.[3] They are sometimes used in the automotive and sheet metal trades to punch holes and scribe lines in sheet metal.[4]
See also
- Bradawl
- Stitching awl
References
- ↑ 1.0 1.1 Jim Tolpin (18 June 2007). Measure Twice, Cut Once: Simple Steps to Measure, Scale, Draw and Make the Perfect Cut-Every Time.. F+W Media. pp. 50–. ISBN 978-1-4403-1760-6. https://books.google.com/books?id=yqOfUCFr1K4C&pg=PA50.
- ↑ Bob Beranek; Ann Schuelke (1 August 2011). The Complete Guide to Auto Glass Installation. AuthorHouse. pp. 52–. ISBN 978-1-4634-4148-7. https://books.google.com/books?id=nPOaLJGpVyEC&pg=PA52.
- ↑ Geoffrey West (18 October 2011). Leatherwork: A Manual of Techniques. Crowood Press, Limited. pp. 38–. ISBN 978-1-84797-348-1. https://books.google.com/books?id=q5t8AwAAQBAJ&pg=PP38.
- ↑ John C. Butler (1944). Sheet Metal: Theory and Practice. Wiley. https://books.google.com/books?id=QN8iAAAAMAAJ.
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