Giant Bubbles


The shape is round. I’m trying to make a bowl. I’ve tried a 4-segment and an 8-segment firing schedule. The full fuse 4-seg. pgm is as follows:

300degrees/hr     1250 degrees      20 min.

600                     1450                  10

9999                     960                  60

100                       700                   1

I’ve tried different kinds of glass, both 96 COE and 90 COE. Firing with the 4 seg. pgm. I got two giant bubbles; with the 8-seg. I got only one. I’ve gotten the bubbles every time using large (12″) pieces, but never with smaller pieces.

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