ShopsmithPowerCouplerRedux

thingiverse

Power coupler for a Shopsmith for my friend Rich the Engineer. While not a remix of Krunchy's model, it was certainly inspired by it. Just like Krunchy says, use at your own risk. I have no idea if it's fit for your use, how long it might last, or whether it will break into 73 pieces, put your eyes out and kill your dog. The printed part is a tight fit, and a few of the teeth were shaved during installation. Rich hooked this low fill (5%) POC test up and tried it with a light load. It worked fine. The next test is an ABS print with 8 shells and 50% fill. The resulting STL file wouldn't convert to XG3 for my flash card. If you make one or have problems with it, I'd love to hear about it. I ended up getting some Filabot 910175 Taulman 910 Alloy filament. It took a lot of tries to get things working right. The real key is 255/65 temps and slower speed. It seemed to work best with 2 shells and a 50% fill. I printed with fill to support the ceiling of the lower chamber. Removing the fill tore part of the teeth off. I redesigned the lower chamber to have a vaulted ceiling, so no support material was needed. I printed it with a raft, and it still worked loose from the print bed. Finally, as strange as it sounds, I added 8 rocket fins to help stabilize it at the bottom. I printed it at 30/30 speed with raft. The print was 9 hours and took 27.5 meters of the nylon filament. The fins were removed with an exacto knife. The finished piece is strong. I recommend stopping the print once you have one to two centimeters, and verify that the side hub fits. It may save you some filament. This new model has the name "Nylon" on the end of it. Let me know how it works out for you. Print Settings: Notes: I printed this in PLA at 200/60 degrees. Use a RAFT with FULL Support infill 100% layer .20 shells 2 feedrate 50/50 Estimated print time 5.5 hours. Filiment Cost is about 30 meters