Quote:
Originally Posted by Thomas Meek
Cutting on a piece of glass there is no distortion. Ordinary window glass works fine, but if you can get something a little thicker there is less worry about breaking it. I use a tempered glass shelf from my refrigerator.
|
I have an 8 inch telescope mirror blank that I use.
it doesnt scratch... and when I get around to turning it into a mirror the surface will all be ground away and polished anyway....