I can't find this stupid knob to complete my resto. Will another knob work instead?
Make a mold of a borrowed one and cast a few new ones!
Alumilite Corporation
I did this for a broken plastic gear and used their high strength plastic to cast a new one. I used the super glued broken one to make the mold. It was just as strong if not stronger than the original gear, because I added glass fibers to the mix.