South Bend 10L Metric Transposing Stud Gear Set

thingiverse

This is a set of four gears (19T 26T 34T 37T) that replace the "stud" gear on a South Bend Heavy 10L lathe and allow you to cut various metric pitch threads. The gears are 0.50" thick, have a 0.625" bore and use a 0.1875" keyway. They are printed at 100% infill with PLA. I've included the Autodesk files incase you need to make modifications. Using the 19T gear does require some filing to be done on the lathes "lash adjustment arm", Bob covers it in the video linked below. The original idea is Bob Neumann's and his videos as well as a change gear spread sheet that he was nice enough to provide can be found here: https://www.homemadetools.net/forum/metric-threadcutting-gears-antique-south-bend-lathe-70312