I've told this story before and perhaps will again because it's a mistake that can kill/maim in the blink of an eye....My friend Bobby (Bear) Garcia RIP could get pretty casual around the shop and never was without a Bud in easy reach and I was guilty of that too on occasion (25 yrs ago)........He had a BIG 3hp 1725 rpm pedistal grinder with a 10-12'' wire wheel for burnishing whatever and decided to pretty up a piece of 1/4'' chain about 5' long with it one fatefull day.....Anyway, presented the chain to the wire wheel and the beast ripped it from his hands, wraped it around the arbor and the tag ends merrily beat his face to a bloody pulp at the rate of 30 wacks a second. He lost his right eye and was never the same. Chain and pedistal grinders don't mix, large or small. 3/8'' chain likely would have killed him outright but people doing smaller chain, jewelers especially, get their fingers ripped off. Chain MUST be firmly wrapped around a board and secured at each end, then and only then it is relatively safe to wire wheel it this way.