Lazyman I do something similar but before using the hole saw, I often cut 3, 4 or even more smaller holes, depending upon the size and shape desired, around the perimeter to create notched knobs. Handy when you need a little more grip. 3 larger holes will give you sort of a 3 wing knob and 5 or more small holes give you one sort of with detentes around the perimeter.
Lazyman ... I do that too. I make many kinds of knobs. I have a few step and repeat jigs I made as well. This is just a quick and simple way that actually functions well.
