Design stolen from Deviator2x. Simple, functional, and small.Thanks!
Print the frame as shown in one of the posted pictures. With the pawl printed down on the bed it will have lengthwise long lines so that it wont break off in use. No supports needed. There is a flat on one side of the key - print it down. You may need to clean up the top side of the frame key holes if the key is tight. Excellent results in PETG.
Fusion 360 design files and Prusa Mini .gcode are provided.
This is a remix from https://www.thingiverse.com/thing:1261318
May 2025: Key 60mm V4.7.stl - Slight mod to take up extra space where the ratchet gear mounts. Perfect on my Bambu P1S. If its too tight for you then try scaling up the ratchet gear by a couple percent.
Did you build it? Please leave a comment and rating.
The author remixed this model. Imported from Thingiverse.
The frame was redesigned to allow the pawl to be printed flat on the bed so that it doesn't easily snap in half.