Craftsman 109 Lathe Gears, Keyed Hub, and Banjo

thingiverse

I recently acquired a Craftsman 109 lathe from Craigslist, but I was missing several gears. After an extensive search, I finally found the necessary information to generate DXFs for the gears at geargenerator.com. Once I had all the files, I cleaned them up and imported them into Autodesk Inventor to create STLs for printing. I've successfully printed two of the gears so far, and they mesh perfectly with their OEM counterparts. To ensure durability, I recommend printing with a high infill setting, as I did with 100% infill using Atomic Filament's PETG material. User "phylo" suggested adding a transposition gear (37 tooth / 47 tooth) for cutting metric threads on an inch leadscrew. For more information on transposition gears, visit conradhoffman.com/metricthreading.htm. I've uploaded a photo from that website to illustrate the concept. I've also shared files for printing the lathe handles that control the leadscrew and other components. All necessary DXFs, Inventor files, and STLs are available.