Affordable Rock Tumbler
By onkelgeorg
Free
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Technical
Parts List:
Geared Motor: 12V, 1:50, 100 RPM, 20 Ncm regularly called RB30 or RB35, available at Conrad, ebay, etc.
Threaded Rods M8: 4x 250mm, 1x 275mm, 1x 235mm
29x 8mm Hex nuts, 1x 8mm locking nut & a couple of 8mm washers. 1x 3mm nut and 1x M3 x 20 screw (for the smaller gear wheel. 3x M3 x 16mm screws for the motor + 3 M3 washers.
4x O-rings 22x2,4mm
3D Printed Parts:1x Frame left, 1x frame right, 2 gear wheels and 4 pulleys
1 Power source 12V, 1A (actually 500mA should be enough) + 1 power cord, long enough, to be soldered to the motor and connected with the power source.
4x ball bearing 608zz
If you want to go with the suggested socket:
- PVC pipe coupling + 2 caps.
- 3D printed inset for the drum
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