DIY Rock Tumbler (Design/Build)

I have some rocks I need to tumble, so of course I decided to build my own rock tumbler! Check below for all the parts used. Here are all the parts on Thingiverse: https://www.thingiverse.com/thing:465... Rock Tumbler Drums (MJR) - https://www.ebay.com/usr/mjrtumblers 612 RPM Motor - https://www.servocity.com/612-rpm-hd-... Motor Speed Controller - https://amzn.to/2Upjh0q Pulleys and Belts - https://amzn.to/38ILQOX Rubber Feet (fit into channels with 1/4-20 nuts) - https://amzn.to/3nrRMjw Follow me on Facebook:   / robertcowandiy   00:00 Introduction 00:56 Design Overview 01:52 Frame 03:22 Bearings 04:16 Drive Motor 05:32 Prepping the Rollers 06:26 The Tumblin' Drums 07:00 Final Assembly 07:29 Finished Product 08:30 The Control Box 09:39 The Hinge Mechanism 11:20 Rock Tumbling Takes Time 12:22 Additional Content