by limitedblack » Tue Oct 21, 2014 1:17 pm
You need a very high pressure to get any results (about 120psi), then when you open the gun the CFM is very high, so the pressure drops extremely quickly. You then have to wait for the pressure to gain again, or it won't strip the panel. Then you have to clear up the grit to re use. You also have the problem of trying to work with enough gear on to stop the grit going in your eyes etc. Honestly, I've had a go at most things, and I did succeed in completing some parts, but you need a huge compressor, a large sealed unit, and a high quality gun to do this QUICKLY.
When I decided to have the underneath and door shuts, gutters, boot done by a proper blaster, after that I realised how much time I would of saved if I'd of just had it all done by someone in the first place.
The weak point is really the compressor, it's thousands for one that you can blast continuously with. If you can work overtime, or for cash, then do that instead and use the money to pay someone, as it will be quicker.
Small parts are fine with a smaller compressor, but not whole shells. You will find you get about 20-30 seconds of good pressure, then 3-5 minutes waiting for the tank to pressure up again.
Just my advice, trust me it's best to get someone in.
Happy Easter