Ryan,
I use play sand or "Black Beauty" purchased from the local Auto Parts Store.
I think its made from (is) a by product of some industrial process and as
its named, it is jet black . Cuts fast and recycles fairly well , less dusty
and lasts longer than play sand and costs about $7.00 for 50 lbs.
As far as your clogging problem .. yes you must screen the blast media and
use a water seperator filter on the compressed air line and dry abrasive and
...in times of high humidity you may find it necessary to adjust the angle
of the choke valve. I have a Tip pressure blaster and they recommend
adjusting (closing slightly) the choke valve that feeds air to the mixing
valve on the bottom of the blaster. This reduces flow but increases pressure
to the mixing valve and reduces clogging. If you dont have this valve you
may want to add one, it tees into the compessed air inlet at the top that
pressurizes the blaster tank and a hose runs down to the mixing valve at the
tank bottom which blends the air and the media flowing out of the tank. The
mixing valve , by the way is usually set at about 45 degrees plus or minus
..not wide open during operation of the blaster. This can be opened or
closed slightly to tune the amount of blast media flowing to the gun. If not
using the blaster for several minutes this mixing valve may be closed to
prevent loading the system with media all the way to the gun. The only
problem leaving the valve in its normal open operating position and just
using the gun tip shut-off is that the unit will surge a bit (excess media)
when starting up intill the hose clears out. Hope this helps a bit.
Eric A. St.Phillips
1959 GMC 100, long fleetside
Fairport, NY
-----Original Message-----
From: Border, Ryan <rborder@fcxena.fc.hp.com>
To: 'oletrucks@autox.team.net' <oletrucks@autox.team.net>
Date: Friday, August 27, 1999 6:27 PM
Subject: [oletrucks] Abrasive suggestions for blaster
>Hi guys, a quick question:
> I've got a pressurized sandblaster from Harbor Freight, and a compressor
>which seems to be up to the task of driving it. But, I'm wondering if you
>all have any suggestions as to what I ought to blast with.
> Up until now, the best thing I've found is a brand of "play-sand",
>available at a local hardware store. I've found that the brand does
matter-
>the "play-sand" at the local Home Depot wasn't nearly uniform enough,
>causing all sorts of clogging problems.
> Even the best stuff I found still causes me lots of woes. Either the tip
>or the outlet valve (out of the tank) clogs very regularly. I'm lucky to
>get more that ~15s of blasting in before having to go unclog something.
>There has to be a better way.
> What do you guys use, and where do you get it?
>
>Thanks-
>Ryan.
>
>Oh yeah: my applicaions range from stripping multi-layers of paint from
body
>panels to cleaning rust off of heavy metal.
>oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
>
oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
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