what did you use to keep the flash rust from coming back? looks good
This. Is a vinegar etch just soaking in vinegar? Or do you do something else to it? What keeps the rust from coming back?
I’m not going to pretend to be a metallurgist but I did this about 8 years ago. I washed it with soap and water to get the vinegar off. I wiped it down with oil initially and have wiped it twice since then. I don’t shoot it much. Somehow the vinegar etch helps prevent rust but I don’t claim to know how.
The etching process just involves wrapping the metal with cloth (t-shirt) and keeping it wet by spraying it with vinegar for 4 days. If you do it, be sure you read up on it because you can ruin the gun if not. You have to fill all threaded holes with petroleum jelly or it will dissolve the threads. You have to fill all pin holes or it will etch the inside of the holes and your pins won’t stay in. Basically fill all holes or screw countersinks. You also don’t want it getting into the action of the receiver. Vinegar is a mild acid and it will mess up close tolerances.