Have you used the d-rust-it product Lotusboy???
If so pleas give us a report. If you use it in a tank, you can reuse it, if you spray it on and rince it off you can't recover it. At $6 a gallon I'm wondering how many gallons or how many applications it would take to strip a cab, or fender or hood, or a heavily rusted wheel rim, etc.
The main thing that you seen to be overlooking is, that Redistrip or blasting removes, rust and PAINT. So with the d-rust-o tiy need to 1)clean all grease etc. from surface 2)strip paint and fillers from surface 3)cleen surface again 4) apply d-rust-it 5) clean surface again.
Denny Graham
Sandwich, IL