Eastwood Rust Converter
Product Review (submitted on October 9, 2012):
I had the curing resistance issue mentioned by other reviewers. Four days after "converting" my set of brake drums they still felt tacky / gummy. I set them outside every morning, out of direct sun, and broght them in every evening. When it appeared I was going to have to strip them I decided to try direct sun, and good thing I did. After two 90-degree-plus days baking in the hot sun, they're dry and hard as a rock, a fine surface for flat black heat dissipating paint. For a sticky under-frame? Not sure how to cure; maybe the heat gun mentioned is your best bet!