Search found 2 matches

by brucesdad13
Wed Sep 21, 2016 2:19 pm
Forum: Kiln Casting
Topic: Telescope mirrors
Replies: 7
Views: 16012

Re: Telescope mirrors

Forgot to show the other side... IMG_20160523_035143_web.jpg I don't remember my firing schedule offhand but it was basically heat slowly over many hours and try to hit working temp for Schott boro and hold for an hour or two and then back off to annealing temp for several hours and then allow to co...
by brucesdad13
Wed Sep 21, 2016 2:16 pm
Forum: Kiln Casting
Topic: Telescope mirrors
Replies: 7
Views: 16012

Telescope mirrors

Hello all! I am relatively new to kilns, glass, and etc and it was suggested I join your forum. My primary interest is in casting/slumping/fusing glass to produce suitable strain-free blanks that can be cold worked into telescope optics. I bought a kiln last year from a retiring pate de vere artist ...