Oxalis acid is used for many things including neutralising rust. I bought a small amount last year to help clean rust stains off the sails which didn’t work very well.
Here however I used it on the bits of the engine mountings that I salvaged. They were caked in thick loose and flaking rust.
Three days in a tub of acid and look what happens. Apart from going a rather disgusting green colour the rust has all but disappeared.
The piece that is still soaking has had one end treated.
Pretty good and now ready for painting.
Saving Anne Marie 