I've never had much luck with the blaster either.   I think my problem was there was to much moisture coming through the air hose line and it was clogged up the sand.  

Steve69

That was the biggest thing I was worried about.  I thought it was a volume problem.   My tank has a gauge on it, and I was watching it.   I had right at 100psi sitting, and at no time did it ever drop below 90psi.  it was the 1/4" hose.   I do think this had a lot to do with it, somehow. 

I also think it was the choice of grit.  I used a "fine" playground sand.   I could get the previous finish to come off in a few spots, but it seemed like it did nothing to any type of scalely rust.    I know at times I had too much sand coming out, so I partially closed the feeder valve, until it seemed like that wasnt the problem.     I do not think I had any problem with moisture, the sand came out.  

I do think that using a more aggressive media, like the black diamond coal slag would probably solve the problem, but without a tarp set up to collect and recycle some of it, it seems like that is going to get expensive in a hurry if the removal rate is the same.  

This the the manual for the tank I have.  

http://www.clarkeservice.co.uk/manuals/garage_equipment/cpsb100.pdf

Last edited by Greg B (5/08/2014 7:29 AM)

If you had a gauge at the "tool" end of the hose, it would stil read 100 PSI until you pulled the trigger.  Then it would drop way down.
I beadblast in my cabinet using about 50 feet of 3/8" hose and it works great.  it is a real fine sand, nothing like playground sand.  You might have done better with a media designed to cut instead of build castles.

Check out media blasting aka soda blasting. You can leave on chrome glass everything and it won't harm it. There's a place here in slc that will put up a structure blast the vehicle and clean up all the mess. An hour is only 50$ they say it usually takes and about 3 hours to do a car.

You could always do as others do and use some air craft stripper