Vice grip with worm screw
cults3d
A clamp that can stay tight because it is equipped with a worm screw Update of the 2nd of May 2021: STL update with less play between parts. This mainly concerns the worm (screw side and clamp side). Adding material in the area of the fasteners with filament of both ½ clamps to make it less fragile at the time of assembly (clearing the holes with a 1.5mm drill manually can help too) Putting paraffin (or candle) can soften the friction between screw and clamp. I added an optional TPU printable bit that clips into the clamp holes for those interested (see added picture)...
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