Putting the part in ordinary household bleach will do the trick, but it does take a very long time (count in weeks). It also needs regular shaking/stirring because the deposit which builds up as the bleach attacks the steel protects the steel from further attack. -- Ce message a été vérifié par MailScanner pour des virus ou des polluriels et rien de suspect n'a été trouvé. MODEL ENGINEERING DISCUSSION LIST. To UNSUBSCRIBE from this list, send a blank email to, modeleng-request@xxxxxxxxxxxxx with the word "unsubscribe" in the subject line.