A good idea for furniture makers, an adjustable knife for a drilling machine. The product is very simple made of three bolts and a steel strip. The central bolt is clamped into the cartridge, and the bolt-knives with the help of adjustment are able to cut a round hole of different diameters.
Unlike the crown, the homemade knife is stronger and designed for large hole sizes.
# 1 Adjustable homemade pen
submitted by Anton 23.03.2018, 13:18
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