where i work, side jobs are OK after hours so i was bored, and needed some shifter knobs any way so i whipped these up. both started as 2" 6061 aluminum round stock. all done on a manual LeBlonde Lathe and Bridgeport Mill.
first is my 4wd shifter knob on my 89 k5 blazer.
then i made this for the main shifter and had a buddy load up the dummy .357 rounds. i was going to make it to the exact dimensions of a .357 cylinder, but it was smaller than felt comfortable in my hand, so i upped the diameter some for a more comfortable fit.