Maybe I'm missing something Eric, it appears from the pictures that the drain cleaner didn't touch the rust. I have used products like DeRustIt and they do remove all of the rust and what your left with is just bare steel.
As I've noted before, I had an uncle that used lye to clean castings and they would come out looking like the day they first came out of the foundry.
Denny Graham
Sandwich, IL
Last edited by Denny Graham; 07/29/2008 1:12 PM.