The Amateur mechanic's workshop : a treatise containing plain and concise directions for the manipulation of wood and metals including casting, forging, brazing, soldering and carpentry (1907)
146 THE AMATEUR MECHANIC’S WORKSHOP. revolves, tlie tool is slid along upon the rest at a rate proportioned to the speed of the piece and the pitch of the teeth, a spiral or screw will be cut. When it is considered, however, that the rate of motion of the tool must be uniform and always in a given… … difficult, but next to impossible to fulfil the requisite conditions. Nevertheless it may be done, and, by practice, is done, every day, with very good results, and very fine-threaded screws can be thus made. A little attention to the- following directions may assist, but practice is the essential,…
Woodwork · Metal-work
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