> I have a bunch of cans, PB blaster, WD40, etc that have lost
> their pressure
What I usually do is re-pressurize them from the shop air. Takes a certain
amount of coordination, but I hold the tip of the
(non-OSHA) air gun up to the opening of the spray button, then press the button
while pressing the valve on the air gun. You may
need to repeat a few times as you empty the can (especially if the can was
still nearly full) but it gives a good spray for a while.
> I am wondering if anyone has punched open cans in this
> condition to salvage
> the rest of the penetrant/contents?
I've done that too. The neat way is to drill a hole, but a prick punch & BFH
works well enough.
In fact, I'm in the habit of piercing cans before I throw them away; just to
remove any possibility of the can exploding when the
garbage is compacted. For that, a sharp rap on the corner of the vise will
usually puncture the can. They are surprisingly thin.
Randall
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