Gear 30 tooth

thingiverse

My Logan turning lathe's threading reversing gears snapped in half while attempting to craft a worm drive with swift lead threads (5 1/2 threads per inch). The carriage slammed into the tailstock when I accidentally started the lathe in reverse. New gears are pricey and can cause other gears throughout the threading transmission to fail, so I decided to make a set of 30-tooth reversing gears from Taulman 910 alloy nylon to replace the cast iron originals. Nylon gears offer several advantages - they're an affordable replacement, run much quieter, and most importantly prevent other gears from being damaged in case of a carriage crash. (I've already tested this twice) The only damage is to the nylon gears, which are easy and inexpensive to replace. I now keep two spares on hand at all times. Print Settings Printer Brand: MakerBot Printer: MakerBot Replicator 2X Rafts: Yes Supports: No Resolution: .2 Infill: 100 Notes: Print using Taulman 910 alloy Nylon and use 6 or more shells for the strongest possible teeth. Post-Printing Ream the hole to .747" diameter, then press in the brass bushing recovered from old gear