This twist lock can be printed with no supports to make a fast and sturdy clasp. Just print two copies (No mirroring) and attach them with their flat faces touching. The proud lugs should set into the corresponding recesses, then when you twist the knobs, they rotate into each other to create an extremely sturdy lock. to have a simple, fast twist clasp. Prints with no supports and easy tolerances. Designed to be attached with 1/4-20 bolts.
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