Filament Torque Testing Jig

These jigs are designed to determine the maximum torque of a filament from a socket wrench before it shows plastic deformation. I am using these to determine a what drive size to use for a custom socket.

A jig for each all the common square drive sizes (1/4 or 6.35mm", 3/8" or 9.53mm, and 1/2" or 12.7mm) and a couple less common drive sizes (3/4" or 19.5mm and 1" or 25.4mm) just for fun.

To use: Mount tool in a vice and use a torque wrench to determine maximum torque.