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Old 07-15-2009, 08:00 AM
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Never said it is impossible to create a bomb! Happens all the time in the grain industry - grain dust, mixed w/ the right amount of air + a piece of bailing wire rattling and sparking down pneumatic duct = BOOM!! Lacquer thinner, gasoline, rattle can paints, finger nail polish remover, wood sanding dust, etc., etc. etc., in the right mixture with air and a spark will blow every time. Point is, with a ventilated booth, solvent concentrations will be several orders of magnitude too low to be an explosion risk. Analogy in the woodworking industry is central dust collection systems (I have one of those too in my shop!). Wood dust in air is every bit as explosive as paint solvent. However the woodworking industry uses dust collection systems all the time because again, the system is moving so much air that the dust concentration is rarely (won't say never cause it DOES happen) high enough to cause a hazard.

By all means if you are not confident in what you are doing, go with the explosion proof components. However the risk (NEVER zero in anything we do in life) is way less than being struck by lightening, hit by a falling jet liner, going thru a year w/o a tax increase from some branch of government.
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