Hi listers;
A pressure blaster uses a pressurized tank to force the media to the nozzle
at
a very high velocity. A suction feed uses some of its energy to suck the
media
thus reducing the amount of pressure accelerating the media.
Pressure blasters can be dangerous in that they remove a whole lot of
material in very short time....When you see metal, STOP!
They remove paint very quickly but, not grease. Yes, it is best to use glass
beads rather than sand, you will have a much smoother finish for painting
using a pressure blaster. Sand is more likely to give a "pitted" finish.
Hope this helps...
Later;
Jeff
> ----------
> From: Tom Witt[SMTP:wittsend@jps.net]
> Reply To: Tom Witt
> Sent: Thursday, September 21, 2000 4:23 PM
> To: tigers@autox.team.net
> Subject: RE: SANDBLASTERS
>
> Ramon,
> The difference between a suction sandblaster and a pressure sandblaster is
> with a suction blaster you are consantly removing the canister to refill
> it
> with sand. The canister holds less than a quart of sand and it takes (too)
> many refills to accomplish much of anything. Added is the fact that
> moisture
> can (read that does) accumulate and clogs things up as well. Did I mention
> its a real joy to thread the cannister on and off lubricated with tiny
> sand
> particles?
> How do I know? It took 120 lbs of sand (and seemed like 120 refills) just
> to
> sandblast my leaf springs and rearend. Why the other type is called
> pressure
> I'm not sure since it seems to draw (suction) the sand as well, but it
> appears to be gravity feed and that may be what is considered the
> "pressure". At least from what I have seen thats the difference between
> the
> two. Tom
>
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