Join Date: Nov 2002
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I sandblasted my Jeep frame last fall (I know your talkin' bodies, but some of this still applies). I'm mostly going to echo the sentiments of Jim_Lou and DDawg16, with a few details of my own experience.
I used a 20 gal. pressure blaster similar to the ones you linked to. I have a 6hp 30 gal. compressor that would not keep up. I could only blast for 20-30 seconds before it kicked on, then maybe 30 more at diminishing psi before I had to stop and let it fill back up.
It took a lot more time than I expected. 3 or 4 sessions at about 2-3 hours each, that includes suiting up in safety gear, waitng on air, and cleaning up a little bit afterwards.
It also took a lot more media, in my case #70 sand, than I expected. I think I used 9 60lb. bags and did not finish the whole frame before the weather got too wet and I bagged it for the season. I probably did 80% of the frame and the mounting surfaces of the tranny skid. The sand was $4 a bag. It would cost a lot of money to do what I did using the comparatively expensive media in your link.
I played with it on some amc eagle sheet metal that had decent paint and no rust and it worked pretty good, no deformation. Still took a long time to do a small area. Also did a Subaru roll bar for a buddy, took a real long time because the spray vs. the tube = not much direct contact area.
I also tried #30-40 sand and it worked OK on the paint but would not do much on the rough texture of the frame.
I'm sure there's more I'm not thinking of right now, but maybe this will aid in your decision.
I have since gotten a quote from a sandblasting shop to do a Jeep frame, an hour or so depending on undercoating etc. That must be one hell of a machine compared to what I used. I am curious to see how much it takes off in one swipe, I had to hit every square inch, OK every square 1/2 inch, seriously.
Oh, and I can't even imagine doing it to something that is assembled. There is no text bold enough for Jims everywhere. Just think seals, hoses, bushings, splines etc. Mask the crap out of everything you don't want gritty/dusty.