On 3/9/2012 9:54 PM, Wild_Bill wrote:
I have 3 good bench grinders (or 5 maybe).. and I now feel a sudden urge
to drill holes in the outboard ends of the arbors, for installing safety
(cotter) pins in them to eliminate the possiblility of having the wheels
spinning the nuts off and running across the floor.

The idea's probably already been patented, so probably not much
potential for it being a rewarding feature.

It might be personally rewarding in a non-remunerative way for you not
to have those wheels go flying across the shop floor.