The d-Rust-It that I was using left a very thin black smut or soot when you took it out of the bath, but a light scrubbing with detergent in the laundry tub produced a clean metal surface, it did remove the rusted metal completely. The only problem is it only lasted for a few parts before it crapped out on me and cost a bunch.
Alan, from the buffed appearance of the few parts that I saw in your album it looks like you’ve wire brushed them after you stripped them.
Denny Graham
Sandwich, IL
Sorry Denny, I didn't make my response very clear. I have gone both routes, De-Rust-It and electrolysis. Both have worked good for me, but I too find De-Rust-It expensive and wears out quickly. The photos of the vent cover were done with electrolysis. I cooked them for 2-3 hours with a 2 amp charger. Took them out & wire brushed them, which only took a few minutes, then washed with cool water & towel dried. Total cost:almost $0. A better charger with a little more power will do a better job. One other reason I like the electrolysis is the water/soda can be poured out. The black goop left from De-Rust-It I have to find a place to get rid of it. Where I live the waste department won't take it & I have no place to dispose of it.