Trommelschleifer

Heavily modified from the original.

* Standard ball bearings to reduce noise and wear
* Fishbone gears, thus self-centering
* Printed drum with gears already on it. No more searching for the right glass container ;)
* Modifikations to fit the modifikations ;)

Still much to do, still a bit unsorted, but works :)

Edit 10/02/2020
Realized i had uploaded the wrong stl for the drum. Sheeeezzz.....

Edit 09/02/2020
Added some photos

EDIT 08/02/2020
Deleted old files, uploaded newer versions, cleaned up filenames.