Thread/Feed chart and change gears

[Vinny]

Been there, done that. Don't use plastic for gears. ABS works ok but only for light duty lathes. I used a special plastic resin made for gears, the first time there was stress on it, it became toothless.

If you have a number of gears of the same module to make, consider a hob. I got one from a Chinese vendor/manufacturer on ebay that worked like a dream when I had to do some gear cleanup on my logan. I had it for about a year and could no longer read the numbers on the side of the box. A quick email to the guy and a few hours later he sent me all the info I needed. Then when I was setting it up on the mill I noticed the numbers were engraved on the opposite side I was looking at. DOH!