I've just yanked the master brake cylinder on my 1952 Roadmaster so that I can rebuild it (it's been leaking past the piston). I've been thinking about giving it an electrolytic bath to get all the rust off the outside since it's an irregular surface (the bore still looks great and the reservoir seems free of rust, but I haven't put my bore scope in there yet). It worked great for my water pump. But now I'm wondering if I could somehow screw up the bore... I mean, it's all just steel, right? Just looking for a sanity check.