Warp Speed Dummy!
I mentioned before that I got some chrushed glass blast media at a recommendation from someone at the grit supply house. I tested it out and didn't like how it performed. Seemed proned to warp metal. It also felt like golf balls bouncing back at me. Playing around w/ air pressure didn't do much. So the chrushed glass got set aside & I kept on using aluminum oxide with good results.
So, one day, I figured I could "use up" the chrushed glass on the inside floors and set on it. The floors are ribbed & welded pretty good, so warping shouldnt be a problem. Floor area went well, no warping. Then, I had a full blasting pot and decided I would skim inside the roof. It had that funky glue stuff on it that I thought would come off easy. BIG Mistake! I warped the roof metal!
While contemplating hari-kari, I recalled reading about shrinking metal w/ heat. So,I broke out the torch and set about shrinking the spots. The metal was "oil canning" before I started. I also got the shrinking hammer & dollies out to actually use them! I shaped the metal back some and eliminated oil canning. It will take a little filler to fix up, but I think it'll be OK. If I don't like it or if it needs something later on in life, then it'll get an AMD roof. Right now, I'll make do. Tired of replacing metal...
I was so sick after it happened. I loaded up that chrushed glass grit and hauled it off after that. Didnt want it around. I should have stuck w/ my gut feeling and told the guy at the grit supply place to "pack sand" & give me my Al-Ox grit!
I'm sure someone has probably had issues w/ Al-Ox grit. But, for me, it works well.
Yea, I drank a lot of Bud's that day! Probably why I goofed! I knew better than blasting the roof w/ thay damn chrushed glass crap.
More pic's coming...
Greg