[ATM] Removing a chrome coating : Update
atm_ken_hunter at yahoo.com
Fri Dec 28 03:07:15 JST 2007
If the mirror has been scratched with abrasives to remove a stubborn coating, you'll probably have to fine grind, polish, and then refigure it. Might as well get busy and break out the fine grinding abrasives and get to work.
Guntram Lampert <glampert at aon.at> wrote:
I was pleasantly surprised by the many suggestions how to get rid of a
stubborn coating layer.
I chose to follow David Weinshenkers advice and checked out the protosar
website. Got the hydrochloric acid and the glycerin.
Since three days, the mirror is soaking in this solution outside.
Outside because I do not want to inhale the fumes of the hydrochlric
acid, and I don´t have acces to a tight vessel. Outside temperature is
about the freezing point.
The coating is gone now on about 20% of the mirror area. The solution
has dissolved the layer only where it was already scratched from
previous attempts with abrasives.
I´ll keep you informed...
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