atari printers - gears

Another way to cut the gear is to turn a shaft of the correct od and mount it in a lathe. Lock the headstock so that the lathe spindle, chuck and shaft can't turn. Make a cutter that matches the shape and size of one of the spaces between the gear teeth. (1) Mount the cutter in the tool post holder and move it back and forth taking light cuts on the shaft until you get the desired depth of cut. (2) Unlock the head stock and turn it exactly the angle between the gear teeth and then lock it again. Reapeat steps 1 and 2 until you've cut all the teeth. The advantage of this method is that you can cut a gear of just about any length. You can then cut them off to the desired size and that will yield a number of individual gears. FWIW THE standard reference for gear cutting is 'Gear Cutting Practice' by Colvin and Stanley. My copy is dated 1937.

from scratch. Book #3 is the metal shaper for gear cutting, after

Joe .