Planetary Gearset Spinner - M2.5 machine screw remix

thingiverse

This is a remix of Cstevenson727's awesome Planetary Gearset Spinner. When printing Cstevenson727's model, I encountered a problem with the small mounting bosses that fit inside the 608 bearings. They were slightly oversized for my bearings and would cause them to crack, either during assembly or shortly thereafter. My initial attempt was to modify them to be solid bosses instead of having thin tabs. The files carrier_revised, cap_revised, and sun_revised implement this change. However, I discovered that my central gear stack (caps, bearings, sun) would loosen over time, so I modified it again, this time with a hole for an M2.5 bolt and indentation for an M2.5 heat-set threadset. You can find M2.5 threadserts on eBay or probably on Amazon too. You can easily set them with a soldering iron, or you can possibly "pull" them right into PETG by using an M2.5 machine screw and washer. Buy decent 608 bearings, preferably hybrid ceramics. Don't buy the cheapest crap eBay bearings you can get your hands on. See Cstevenson727's original make for an assembly diagram. I printed these parts in AmazonBasics PETG on a Prusa I3 Mk3 printer. Here is a video demo of the spinner in action: https://www.youtube.com/watch?v=t2kqcCjOkCs