Rock tumbler

thingiverse

I built a rock tumbler that effectively polishes brass and copper printed filaments. It may spin too quickly, but you can resolve this issue by reducing the supply voltage to the motor down to 9 Volts (which is what I did and it works well) or adding more cutting material inside the tin with the object. Results appear within a few hours of spinning and it generally functions well. However, one thing I would like to add in the future is a chain guard to keep the chain from jumping off the sprockets, which is something I'll design and post at a later date. This project saved me a lot of money compared to buying a commercial tumbler for over $100. The motor can be easily sourced on eBay at this link http://www.ebay.com.au/itm/161777108766?_trksid=p2060353.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AI A video showing the tumbler in operation is available to view here https://youtu.be/5z37JXI47kM