[ARUP]

I spun the axle while chucked in a drill press then gently applied a spinning cut-off wheel's flat surface (not its edge) to slowly grind a point. Accuracy... probably not that great but it does seem to spin true and... for about 10 seconds... by giving it a start with my finger. When I get a wheel or gear balanced it spins a good lick before it stops. It was a fun exercise and gets those brain waves a-wavin' about making your car smoother.