> Today I had a fresh roll of 0000 steel wool catch fire from grinder > sparks. Just 5 seconds of low level flame (like alcohol flames) and > another 5 second of glowing strands until it went out. Of course it went > out -- steel is not a combustible material!! It most certainly is! It's just a matter of proportion of thermal mass to availability of oxygen. > I was using an angle grinder (hand held, and this wasn't piano work). > The sparks were shooting about 3 feet across my bench where the roll of > steel wool was. If it had been resting on something like paper towel, > that might have been more serious. > > Watch your sparks! > > John Baird Absolutely. It's surprising what will easily burn, and the surprise isn't necessarily entertaining, exothermically speaking. Tinder is the night, so be careful out there. Ron N
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