Worm Gear, CD-Drive-Motor Speed Reducer
thingiverse
I made this with Fusion 360, the tolerance is about half a milimeter. Add-ons : [linear drive conversion](https://www.thingiverse.com/thing:3107269) The things you will need aditionally, 1 motor from a CD drive (or something similar) 1 fitting powersupply (3-12V works just fine) something to lock the gears in place i just used 1mm and 2mm thick pieces of solder some kind of belt in my case a rubber band stolen from moms kitchen :D due to the large amount of air inside the wheels its a lot of place for resonance, it might be a bit noisy. definitely use some lubricant and maybe you need a file to give it a little more tolerance. Assembly : superglue everything together as shown in the pictures Note for printing turn the Base like it´s in the picture the other way would be a real challenge :)
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