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
[edit]References
[edit]- ^ a b 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.
- ^ Bob Beranek; Ann Schuelke (1 August 2011). The Complete Guide to Auto Glass Installation. AuthorHouse. pp. 52–. ISBN 978-1-4634-4148-7.
- ^ Geoffrey West (18 October 2011). Leatherwork: A Manual of Techniques. Crowood Press, Limited. pp. 38–. ISBN 978-1-84797-348-1.
- ^ John C. Butler (1944). Sheet Metal: Theory and Practice. Wiley.
Well, that’s interesting to know that Psilotum nudum are known as whisk ferns. Psilotum nudum is the commoner species of the two. While the P. flaccidum is a rare species and is found in the tropical islands. Both the species are usually epiphytic in habit and grow upon tree ferns. These species may also be terrestrial and grow in humus or in the crevices of the rocks.
View the detailed Guide of Psilotum nudum: Detailed Study Of Psilotum Nudum (Whisk Fern), Classification, Anatomy, Reproduction