I was considering the soda blaster because it wont warp the metal. I forgot that I have access to one of those monster air compressors. The kind You tow behind a truck. Which saves me alot of money right there, so all I have to do is lay out the dough for the blaster and media. As for soda not removing the rust, wouldnt I want to cut/grind/por-15 or whatever on that anyways?