moehring
moehring replied to the topic problems with glass cracking when slumping in the forum Stuff Wanted 8 years, 6 months ago
Try this schedule. I’m assuming you’re using COE90 glass. It looks like your second segment is too fast. New anneal temp is 900. Should work for 1/4″ to 3/8″ thick piece.
200/hr 900deg 30min
200/hr 1225deg 5min
9999 900deg 60min
100/hr 700deg 0min
200/hr 100deg 0min
