Bowl drop failure?
Posted: Wed Mar 16, 2016 11:56 am
4 layers of glass 8 3/4" square over a 6 1/2" square hole in ceramaguard with a drop of 4 1/2". When I peeked at 1300 degrees It had fallen through the hole?
First failure I have had. I think I violated some rule of thumb. Too many layers and the glass was too heavy? Not enough glass outside the hole? Both?
Schedule:
Top firing Skutt kiln so I go very slow
100 to 500 hold 15
100 to 1100 hold 15
100 to 1300
First failure I have had. I think I violated some rule of thumb. Too many layers and the glass was too heavy? Not enough glass outside the hole? Both?
Schedule:
Top firing Skutt kiln so I go very slow
100 to 500 hold 15
100 to 1100 hold 15
100 to 1300