Now, this has to be one of the best (if not THE best) rust removal techniques there is! grin
Check out www.stovebolt.com/techtips/rustremoval.htm
I just removed ALL the rust of my 50+ year old rust covered headers.
The process took about 5 hours in the solution and all I had to do was rinsing them off and scrubbing them moderately with a plastic bristle brush. cool

This method is truly amazing and safe!

Cost: ZERO
Effort: ZERO
Result: PERFECT


On the road every day...
1952 Truck - 235
1948 Coupe - 261