moehring
moehring replied to the topic problems with glass cracking when slumping in the forum Stuff Wanted 10 years, 10 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
