Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:2177455.

A simple M3 nut knob. Works great with both regular nuts and nylock nuts. This version is adapted for the DIN985 standard, which is common in the EU.

Print with the thumbscrew's largest face on the print bed, that is, upside down. I printed using PLA, no issues.

This is a remix of http://www.thingiverse.com/thing:2153764