Maybe this should be its own thread, but has anyone ever used citric acid for rust removal? I did a web search, and it seems to be used successfully by collectors of woodworking planes. I know everyone here likes oxalic acid. I've also used it with good results, but I'm just uneasy about it's toxicity, especially when it comes to mixing up enough of it to dip a frame--I don't like the idea of dumping 75 gallons of it onto the ground or into my septic system. I'd much rather use citric acid, which as I understand it is essentially non-toxic (I know, I know, EVERYTHING is toxic in sufficient quantity). If it works and won't wreck paint, obviously. Anyone here tried it?
JV