He used the fine sand that I get to do it but a guy came to my neighbor's about a year ago and blasted his '50 GMC. It was all apart except for the cab sitting on the chassis. The guy did it all, plus blasted a big Kerosene tank for me, for $340 total. I know he used 20 bags of sand. The guy has been doing this for just about 20 years and hails from around Asheville, N.C. Made me sick when I think about all I went through to "do it myself" when I did my panel.
Just throwing this in for what its worth!
...again, if it won't fit in the Skat-Blast it goes to someone else. Old dogs can learn new tricks!