Hey guys, sorry I havent posted in awhile, I have been super buzy. I was thinking of upgrading my bench grinder to a stand alone rest that is conected to the bench. I also have read several articles about balencing grinding wheels, or any other wheel that has high speed capacity. It used two rails that are perfectly parallel and level with a hardend and ground axel. when placed on the rails the heavy side would turn to the lowest point, either meaning you could remove material on the heavy side, ad weight to the light side, or do a combination of the two. I saw the article in "The Homeshop Machinist". I will have to get back to yall with the date. The auther also poured the arbor hole full of molten lead, and reamed a hole the exact diamater of the grinders shaft on the lathe. The weight of the lead acted as a harmonic dampener, and ensured the hole was not out of center. This setup also removed the inacuracy of the plastic bushings that we have become reliant on.