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westes

Used Citric Acid to Remove Rust on Shears. This Creates New Problem.

westes Zone 9b California SF Bay
3 years ago
last modified: 3 years ago

I have some Corona HS 4344 DualLINK hedge shears. I saw significant rust on this and decided to try a 3% citric acid solution to re passivate it. What I did not realize is that one of the blades was not steel exposed to the air, but it was instead some kind of nonstick coating. The citric acid has basically washed off that coating, exposing unprotected steel below it. Now I have a cleaner blade, but I have a worse problem because the exposed steel is probably likely to rust very easily.

The first photo shows what the original product looks like. The silver part of the blade is black steel with a silver-painted coating. The second photo shows what the blade now looks like after my citric acid attack.

Is there anything I can do to treat or coat the exposed metal to stop it from rusting rapidly in the future?




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