CAUTION! Evaporust is great stuff, but it will damage spring steel. I have first hand experience learning this the hard way - - I broke the springs on some calipers very similar to the ones in the original post. I'm not a chemist, but I think it's related to hydrogen embrittlement - - basically the metal hardened and shattered under its own spring tension.

Keep spring steel away from Evaporust.

The stuff I used was called Interchem 7150 Rust Inhibitor but I can't seem to find much on it on the interweb. It was years ago that I bought this stuff so it's probably not allowed to be made today. I could water blast a piece of metal and while it was still wet, rinse it with this product and it would not rust.

Probably phosphoric acid.

Im doing a brake dust cover in bucket of vinegar right now. I am very happy with how it is coming along after only a week.

Dang! I saw your post too late. I placed three of the smaller tools in a plastic tub and soaked them for a couple of hours (I got busy and forgot about them) :(

One of the springs fell apart in my hands. It was a Craftsman, so no big loss, other than sentimental. The other two are good. I’ll have to proceed with caution the others.


http://forums.pelicanparts.com/uploa...1587952510.jpg
http://forums.pelicanparts.com/uploa...1587952611.jpg
http://forums.pelicanparts.com/uploa...1587952611.jpg

Sorry to hear/see. That's exactly what mine did. Looks like you got the other two out in time, which is good.

I've used vinegar. But it'll rust again without a coating of oil, primer/paint