I picked up a 29 that has a reddish brown metal flake paint or finger nail polish on it. It's very hard and a brass brush does nothing . Any suggestions on removal without blue damage ?
I've had good luck with acetone, fingernail polish remover, or denatured alcohol. However, I've only used them on stainless guns, so I don't know if they're ok to use on blued guns.
It is the acid in any cleaner that removes bluing. Naval Jelly has Phosphoric Acid, which attacks rust as advertised. Bluing is a form of rust. I do not believe any paint remover contains acid, but you can check the MSDS on all products before use.
Acetone should do it, might take some soak time, but safer than any paint remover. Acetone has a very low flash point and vaporizes easily. A covered container and NO sparks or flames. Leave an uncovered pan of acetone out very long and it will become an empty pan.
Is the entire gun covered with this paint ? How strange. Actually, fingernail polish is a very very high grade of paint so removing it can be a challenge. I would try acetone as suggested. As an aside, for rust/bluing removal go to Evaporust. This stuff is amazing and you could probably drink it with no danger.
I have removed fingernail polish from a 29-3 using acetone with no ill effects. Had fingernail polish in roll marks and front sight. Might steer clear of plastic insert in some front sights though.
If it is the whole gun, take off stocks and soak gun in acetone. Let it soak for a few minutes and then use a toothbrush to remove paint. It may take several soaking and brushings, but will work without damaging the gun.
If it isn't the whole gun, you can soak a cloth in acetone and wrap it around the painted part. Again, brush as above.