grat
Member
I'm currently rehabilitating an old ICA Reflex quarter-plate camera, and the screws are definitely not brass. 
Some time ago, I became aware of a product called Evapo-Rust, which is a reusable, non-toxic, non-bio-hazard, eco-friendly rust remover that you just soak and rinse to use. Sounds too good to be true, but when people like Adam Savage start swearing the stuff actually works, it's worth trying.
Tonight I tried some out at the "minimum" dosage-- soaked a dozen or so screws and fasteners with minor rust for about half an hour, removed from the solution, rinsed and dried.
Verdict is generally positive-- everything is considerably cleaner, although the washers will need another soak.
Before:
After:


Some time ago, I became aware of a product called Evapo-Rust, which is a reusable, non-toxic, non-bio-hazard, eco-friendly rust remover that you just soak and rinse to use. Sounds too good to be true, but when people like Adam Savage start swearing the stuff actually works, it's worth trying.
Tonight I tried some out at the "minimum" dosage-- soaked a dozen or so screws and fasteners with minor rust for about half an hour, removed from the solution, rinsed and dried.
Verdict is generally positive-- everything is considerably cleaner, although the washers will need another soak.
Before:

After:
