"Old glass has minute, invisible scratches that can make it break in odd
ways."
Thanks for the reminder Ed. I have cut lots of glass, some of it over
100 years old, so I am not too worried about that part.
There's quite an investment in time in making windows so I want to do
it right. There is a very well known wooden window company not far away
so I am going to see if I can get a factory tour (without telling them
that I want to steal their ideas).
TTFN
--
Calamity Jane