Rotary/Rock Tumbler machine for polishing - (Small printer bed)

thingiverse

Here is my Rotary Tumbler for polishing printed items like metal filament prints. I've printed on a 120 x 120 mm bed size printer. It needs to be complete with all the parts, including: * motor (http://www.conrad.fr/ce/fr/product/227552/Moteur-a-entrainement----12-V----Modelcraft----RB350050-0A101R----150) * fuse (http://www.conrad.fr/ce/fr/product/533788/Porte-fusible-SCI-533788-10-A-250-VAC-1-pcs) * voltage regulator for speed control (http://www.conrad.fr/ce/fr/product/222347/Regulateur-de-tension-pour-les-moteurs-electriques-et-les-motoreducteurs) * power connector (http://www.conrad.fr/ce/fr/product/735640/Fiche-dalimentation-DC-Embase-femelle-verticale-Cliff-FC681445-interieur-55-mm-1-pcs) * 4 ball bearings 708 * several 8 mm bolts and threaded rods, along with washers There is a flexible shape to print in flexible filament over pulleys for getting enough traction. With this setup, the gear wheels have a ratio of 1/1, resulting in about 30 turns per minute at full speed when using a 100 mm container. The ratio can be modified by adjusting it, which should provide sufficient torque. There is also a 20° rotation allowance for the motor mount, allowing slight adjustments to wheel contact. Improvements are planned: * adding more rigidity to the gears holder * developing a lock system for the bearings, as they currently don't stay tight enough for long hours of running without glue... Remember: don't put your fingers between the geared wheels - it hurts!