Pinging glass after slumping
Posted: Tue Jul 25, 2017 3:25 pm
I just took a glass piece out of the kiln after slumping it into the large organic mold. It's kind of 3 layers in that one piece is a flat coral design, the next layer is frit lace and the last layer is an irridized clear circle. All Bullseye glass. It slumped nicely using the following schedule:
250 - 1000 -15
100 -1175 - 23
AFAP - 900- 40
100 - 800 - 0
200 - 700 - 0
400 - 100 - off
I felt like this was a very conservative schedule so am very surprised to hear pinging. The coral piece was 11" in diameter and the lace and clear circle were approx. 10" dia.
I'm wondering if I can put it back in the kiln and refire up to 1000 F and then do a longer hold at 900F, perhaps for 60 min? That is provided it doesn't break before I get it in there again.
What do you think??
250 - 1000 -15
100 -1175 - 23
AFAP - 900- 40
100 - 800 - 0
200 - 700 - 0
400 - 100 - off
I felt like this was a very conservative schedule so am very surprised to hear pinging. The coral piece was 11" in diameter and the lace and clear circle were approx. 10" dia.
I'm wondering if I can put it back in the kiln and refire up to 1000 F and then do a longer hold at 900F, perhaps for 60 min? That is provided it doesn't break before I get it in there again.
What do you think??