Another acid is ammonium hydrogen flouride,but be advised these chemicals are a little bit stronger than saaaaaay "vinegar"!!!!! Use gloves,face shield and while your at it a reg. and your favorite mask. This stuff is nothing to fool around with,and seems to eat everything but S.S. and some plastics.For your purposes you may just consider having it done at a commercial operation. -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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