Originally Posted by
Capecodder
OA bath will ruin the paint even with a small amount of OA. The paint will become dull and even a good waxing will not bring it back.
Tell me more. How many painted frames have you treated with oxalic? What concentration? I have done about 40 frames so far, haven't ruined the paint yet. But I use really dilute oxalic.
But I do not recommend an oxalic acid soak for just a couple of minor spots. Not worth the effort, and there are spot treatments you can use instead.