I took a different approach to toward motorizing a hand-cranked gadget: http://www.thingiverse.com/thing:1963818 - When I tried with PLA, the shaft kept snapping off, so I made it work by using a steel shaft embedded in the print.
I have considered doing that, but I didn't because I do not have a shaft handy that I can use, the typical bits that come with drills are too short… But it's a good idea so I'll add this variation for those who want to try it.
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I printed it and the fitment was good. With PETG it did not last very long.
I took a different approach to toward motorizing a hand-cranked gadget: http://www.thingiverse.com/thing:1963818 - When I tried with PLA, the shaft kept snapping off, so I made it work by using a steel shaft embedded in the print.
I have considered doing that, but I didn't because I do not have a shaft handy that I can use, the typical bits that come with drills are too short… But it's a good idea so I'll add this variation for those who want to try it.