Motorized Turntable using 130 size DC Motor
thingiverse
This is a motorized turntable powered by a 17k rpm 130-size DC motor that operates at full speed. It's also an educational tool that demonstrates how to slow down a high-speed, low-torque motor to a speed suitable for display on a turntable. The turntable isn't the most stable one available. This project was designed as an experiment in gear manipulation and proof of concept, showing it's possible to reduce speeds and increase torque. It's still a work in progress, so feel free to leave comments with suggestions for improvement. To build this turntable, you'll need a 3v DC 130-size motor and two 25mm M3 screws that will screw directly into the frame. When printing with a brim, be extremely cautious when removing the brim from the gears. You'll need to use a hobby knife to cut out any leftover brim between the gear teeth. This is crucial: if you leave the brim in place, it will catch on the gears and make everything difficult to turn. Clean gears ensure smooth operation with minimal resistance. Assembly involves placing one M3 screw in the middle of the top bracket, then stacking the gears upside down on top. It can be a bit finicky but is fun to assemble. If you encounter problems with the motor gear not turning well, try adding a small amount of oil or WD-40 where it connects to the base. There's enough tolerance for smooth rotation, and occasional lubrication may be necessary.
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