Print in place ratchet design ( lemmy.ml )
After half a dozen iterations, this was the first reasonably working, acceptable feeling, and good-sounding ratchet mechanism.
allows clockwise rotation
blocks counterclockwise rotation
design features:
- allows for a large inner bore (e.g. rotary encoder shaft or 5.2mm screwdriver bit)
- printable with 0.4mm nozzle
- 2cm diameter
- no assembly required. Print in place.
To get a full ratchet: mirror the assembly and add a mechanism/part that pushes one of the springs out. In neutral both leavers are engaged and the ratchet is completely locked.
Btw. Good luck copying it without going through half a dozen of iterations. Going from it barely works to this isn't easy. For my part: Version 5 was working and close to the final design. It took another 10 rounds to get it usable and from there some more to fine-tune it.
![](https://kbin.chat/media/cache/resolve/entry_thumb/21/86/2186ad3f9fc38ae149151477015f2e8488c575a4624ef7c611c9f3005175d74b.jpg)