Rotary Tumbler
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An extendable drum polishing machine design.
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Model information
- Source
- Printables
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- Tools
- License
- Creative Commons — Attribution — Noncommercial
A simple, extendable, rock tumbler / drum polisher machine.
The length of the machine (and therefore capacity for tumblers) is dependent only on the length of your conduit and baseboard, although you may need supports for longer builds. This design uses ¾" EMT conduit spaced 5" apart, therefore good containers to repurpose as tumblers include those used for; protein powder, oatmeal, big mason jars, etc. Any cylindrical container with a diameter greater than 5 inches really… just put some rubber bands over your containers for better grip on the conduit.
The motor in this design is reclaimed from a hand drill (Ryobi I think?) so if you intend to build your own version of this design you will likely need to make some minor modifications to the motor mount parts.