The mechanic's tool book. With practical rules and suggestions for use of machinists, iron-workers and others (1868)
Harrison, William B · New York, D. Van Nostrand · leaf 119
at the point of the drill as upon thebody of the drill. We mention this as the inex-perienced often leave the point straight, with notwist, like a flat drill. When the drill is forged there are two ways offinishing it up :—By turning it true and of a propersize in the lathe, or by running it into a… … Mg. 26. which is to be presented for the entrance of thedrill forging. When the tool is thus made it isnicely tempered. To use it place the forging forthe drill in the chuck where it is to rotate whenused, then hold the tool with a wrench or any con-venient mode of retaining it and enter the…
Machine-shop practice · Tools
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
