I have started making several tools and jigs for my workshop. One common thing I find I am needing are knobs for various things.
I took the time to make a pattern out of some Masonite to keep for future because I know I will be needing to make knobs for many projects to come.
Round over edges with 1/16” roundover bit or just sand edges over. You’ll want to glue at least 1/2” of a 1” dowel to the bottom of the knob to leave room for your fingers. For knobs with a ¼-20 stud I first drill a ½” hole with a forstner bit 1/8” deep. Then drill all the way through with a ¼” bit.
Mark the shape of a hex head bolt in the ½” hole and using a ¼” chisel cut out a hole for the hex head bolt. Because you are chiseling out a hole I would stick with solid wood. I wouldn’t subject my nice chisels to particle board and plywood won’t chisel out as nice.