Use caution. And safety goggles.
"Spokane fire officials said the man was seriously burned when he used a
cordless drill to penetrate the [spray] can."
Unless he was huffing, probably had a clogged valve or dip tube, and he
thought the can had just lost its pressure, and was trying to salvage
the paint to apply with a brush. I know I get pissed when a can of
whatever goes flat, but still has most of the product trapped inside.
Why did the chicken cross the road? To paint something.
I did try to depressurize a spray can of paint, one time.
Can with a clogged nozzle. Figured I could always brush it
on. Well, the paint and propellant mix foamed all over the
place, and it was a considerable mess to clean up. I won't
do that, again.
*I seem to recall Stormin Norman doing the same thing a while back. He
didn't get burned; just got painted blue. Maybe he'll repost the link as it
was a very funny story.
I don't know how many languages they need to publish "Do not puncture or
incinerate" on every can.
Trouble is, you can't always tell for sure if the pressure is released.
Sometimes the valve is just gummed up. I had an ancient can of foaming
engine cleanser self-detonate on my once, rotted out from inside, just
sitting in a milk crate on shelf over the washer. Lived in an apartment
at the time- no freeze-proof outside storage. Made a hell of a mess. I
hadn't touched the can in a couple of years. Split right down the side
seam. Like right now, I was sitting at the computer hanging out on
usenet, instead of doing anything productive. Scared the crap out of me.
That's what pellet guns are for.<g> Last week I stopped myself
from tossing one of those brand-new-but-dead Great Stuff cans.
'Let's see if it is really depressurized, or if it is a nozzle
problem.' He says to himself
I *almost* set up a video cam a few feet away. Glad I didn't.
That sucker spun around for 30 seconds or so and managed to spray foam
in a 10foot radius! Next time I'll set up a cam- in a plastic bag.
For paint cans I usually just put them in a cardboard box to contain
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