I recently got my hands on this M40 helmet with the remains of wire camo. As you can see this helmet still has a lot of paint, a decal and a hell of a lot of rust. The first thing i want to do with this helmet is clean it with some oxalic acid ,but I’ve heard that it lightens the paint. If I were to put this helmet into a solution of 100g/8l would it lighten the color and damage the decal? How long should I leave it in the solution?

Thanks for your replies!

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