Dave wrote:
Retired my old portable air tank -- heard a fizzing sound in the shop
and found a rust blister on the bottom at the lowest point. I am not
the sort who can discard something metal due to an expiration date, so
I wonder if I shouldn't re-orient the next tank to put the air inlet at
the lowest point?


I'm not one of those sky-is-falling types, but if you know your tank has rusted
to the point air is beginning to audibly escape, can a catastrophic failure be
far behind? I hate to say this, but I recommend replacing the air tank. Make it
into a forge or a garbage can or something, but don't use it for compressed air
anymore.

That's my 2¢ worth, anyway.

GWE