Knob on a 3/8 inch screw

This is a basic knob I designed to replace a similar one that I broke off a powermatic table saw rip fence. This knob has a hole in the bottom that a 3/8" threaded rod screws nicely into. I used vicegrips to hold the rod while screwing it into mine. The hole is ~1" deep in the knob so size your threaded rod appropriately.