Any spark, and I have been given mighty static zaps with our metal wand at work, isn’t coming from the motor. It’s coming from the debris building the electrical charge in the plastic hose.
I think the biggest fire risk with a vacuum is having the powder sit in the canister or bag out of sight and out of mind, just like other dry combustibles.
It isn’t the seven kernels at the end of the session, it’s the cup and a half over a year of single use dedication. Stockpiling, if you will.
It’s this
forgotten danger that bites.
But, who the heck is vacuuming burning embers into a bag full of dog hair and ruining a perfectly good vacuum?
Uncle Dan, that’s who! Dumbest smart guy I know.
But the powder is just bits of graphite covered plastic at relative room pressure of 15psi. Once it is primed to 4-5,000 psi and hit with a flame it becomes what we know and love, BoomJuice!
I am currently looking for a little dust buster thing for my bench. A little cup to empty every time. And small enough I don’t trip over it.