Thumb T-Bolt

OpenScad code for rounds and fillets is pretty slick. It renders fairly fast.

Press onto 1/4-28 flange bolt. Scale or modify the OpenSCAD code as needed for good fit.

I used it to replace a stripped 1” long height adjustment bolt on a music stand.

See Amazon for: On-Stage SM7211B Professional Grade Folding Orchestral Sheet Music Stand, Black