Is variable speed on a grinder necessary
· I had a 3 speed pulley setup on my first grinder and didn t feel variable speed was worth the money A few months ago I built a new grinder with VFD drive and have had to eat crow there is NO comparison There is too many times I use the 2X72 to grind just a couple of thousandths and that MUCH be done at a dead slow speed 500 SFPM or so