Originally Posted by
Hart
I had a very poor experience with Evapo Rust. I left it on a blade over night and it came out blackened:
It's almost as if it had been blued and it did nothing for the black rust in the pits on the blade.
From the Evapo Rust web site:
"Q) I get a black film on some parts after using EVAPO-RUSTTM. What is it and how do I remove it?
A) The black is carbon from the steel. Generally high carbon steel is used in making items that are flexible (e.g. springs, saw blades) High carbon steel and tool alloy steel items when de-rusted will have a darker appearance. Much of the carbon can be removed simply by wiping with a cloth."
The carbon on the blade did not wipe off, not much with polishing paste either. I had to use green rouge on my buffer to get the blade clean again.
Not to mention the possible effects of decarbonizing the steel a little.
I won't do that again.