Re: Is it true that vinager relics new nickel?
DO NOT USE Muratic acid on nickel covers....
Muratic Acid is too strong for nickel, it'll probably ruin your cover.
To your question, you can age nickel plating with vinegar. Take a rag and soak it with vinegar... put that and the nickel cover (not the pickup itself, only the cover) in a sealed plastic container or plastic bag. So that the fumes of the vinegar can react with the nickel plating without letting fresh air in. It will slowly eat the plating and dull it nicely. You have to clean the cover with naptha or some alcohol first so you don't have any fingermarks or anything on it, otherwise it will be awfully "finger printed" afterwards. You might need to have it in the sealed container/bag for a few hours before you see any result.
A faster way is to go and buy some etchant solution from the electronics store. Have two bowls, one with etchant solution and one with water. Clean the cover with naptha etc. dip it into the etchant solution (use gloves or you'll have yellow fingers afterwards) hold it there for a couple of seconds (you have to try and see how long yourself) then move it over and rinse in the bowl with water.
You don't want to have the cover in the etchant solution for too long, as it should eat it quite quickly so watch out! I've only done it the vinegar way myself.
Muratic Acid is used in the same way as vinegar, but for chrome. As it is so much stronger!
ATTENTION! DO NOT let either etchant solution or muratic acid down the pipes... as it will eat and rust them on the way down! soak it up in rags and put it in the trash can or someting. NOT DOWN the pipes! :smokin:
Good luck!