Desktop rock tumbler / ball mill / rotary mixer

thingiverse

I've updated some gcode that I came up with myself. It prints a cap and body pretty slow and with 0.1 mm layers at the threaded bits. I don't use a cooling fan, and the parts turned out really well. I had to cut a little off the top to make it flat where it curled slightly. Weighs around 52.5 grams with PLA. Don't take my word for it - results may vary. https://youtu.be/MB1M9SMeyfQ This has been a fun little project to work on, and it actually functions like it's supposed to. The parts need to come out really well or it won't leak. I designed this around an old printer motor that already had the gear set attached, so I just glued the drive gear on with CA. Initially, I thought using internal threads for the cap would be a good idea, but it ended up leaking like crazy. So, I changed it to external threads on the body and it works great now. If your printer is tuned in and extruding properly, this shouldn't be an issue. Just watch out for first layer problems. I just realized that the holder is perfect for a vitamin D3 bottle of 220 count. It might be possible to use that bottle with a printed Ninjaflex belt. I have 50 grams of Ninjaflex waiting for something new to do. I tested it with Maker Geeks PLA, but something harder and more abrasion-resistant like nylon or polycarbonate would be better. Thanks go out to ArcMatt for his feedback and criticism, even though he claims to be negative sometimes. Note: The thread tolerances are only 0.2 mm, so if your printer isn't very accurate, you might want to scale it down just a bit.