OO> Many of the responses said to use Draino. I talked to E & W OO> optical here in Minnesota and they use household Lye. Dale,
I removed the coatings on a recent mirror simply by placing it in a plastic pail and pouring Chlorox over it and letting it set for about an hour. Completely removed the old coatings. A quick rinse and it was ready to send in for a recoating.
Mike
* RM 1.3 * Death is life's way of telling you you've been fired.