Asinimali

I nearly started a fire in the dust collector of my belt sander by a spark created from a screw in the wood I was sanding. Now I am hyper-vigilant about sparks. I've heard of vacuums exploding when a spark was introduced into flammable dust. Work ouside, keep your dust collector outside, be aware of possible sparks, use your nose, and empty dust filters before leaving your workspace if there's any chance you sucked up sparks...