On Mon, 11 Sep 2006 15:30:11 -0400, wrote:


I'd like to caution against using a razor blade (or anything harder
than glass). You can scratch the glass which makes it more difficult
to clean later.

Since when is a razor blade harder than glass?

It's not, but close in hardness. Who knows the hardness of the crud
on the glass? I recommend a nylon net to clean the glass along with
lye. Use safety and caution when handling strong alkalines. You can
rinse the glass with white vinegar which cleans again while
neutralizing any lye residue.