rotary tumbler simple and easy to assemble

A simple and easy-to-assemble tumbler for polishing 3d printed parts or stones
this design features a bldc motor with power draw of only 2.5w when running.

Material requirements:
1pc metal can with the dimensions of 100x150mm, but others should work as well
4pcs 608 bearing
2pcs 8x195mm aluminum tube link: https://a.aliexpress.com/_EQFNlWK
1pc A2208 17T 1100kv bldc motor link: https://a.aliexpress.com/_EG0mRdu
1pc 30A ESC (any ESC that supports 2-3S will work) link: https://a.aliexpress.com/_EGR9tNu
1pc servo tester link: https://a.aliexpress.com/_EIg6rQw
The rollers that drive the metal can are printed in TPU, but PLA should work as well. You will have to stick tape to ensure a good grip if PLA is used.
The gears are attached to the shafts with super glue. After installing, they have to be lubricated