"Stealth Pilot" wrote

can I suggest that you investigate trailer mounted diesel compressors
of the type made by broomewade.
you will need to brew up some adapters but the trailer mounted
compressor *will* give continuous air at full pressure.

your other problem is concerning the air pressure of your compressor.
120psi will see grunge and corrosion removed quite well.
110psi will only remove corrosion if you play the gun over the part
continuously.
80psi is a waste of time.

The other part of the equation is the question of what the sandblaster type
is, and what the size of the unit is, and the CFM recommendation.

If it is a small unit meant for home hobby use, it likely is deficient for
larger jobs in several ways.

1) Size of blasting media hopper. Small, too small, most likely.
2) Type of feed from the hopper to the gun. Suction hoppers are usually a
pain in the butt, clogging up, not feeding quickly enough. Gravity feed
better, pressure feed even better.
3) Size of the gun and nozzle. Small air nozzle and media feed will still
only do a very small area, no matter how big the compressor, even so you
never have to wait.
4) Nozzle material used in its construction, and how easy (and expensive)
the nozzle is to replace.

Like someone else said, take care to protect yourself from the dust, and
even the dust you shake off as you are taking off the protective equipment.
It can do very bad things to you, no doubt.

Mike still has not said what he wanted to blast, has he? I wonder how heavy
he needs to go?

Could be time for a home brew compressor made from an engine running on half
of the cylinders, and pumping air with the other cylinders. I've always
wanted to do that, but you would have to have quite a bit of use for it
planned, to justify the money and effort to make one.

I have done the multiple air compressors tied together for painting with a
HVLP gun, and it wasn't bad. Waiting sucks, and waiting for air while you
are painting and trying to keep a wet line is even worse!

That said, the demands of all but the smallest of sandblasters are much
higher than a paint gun.
--
Jim in NC