I’ve successfully slumped
I’ve successfully slumped two of them. The white does fade a bit, but it does ok. I actually do two firings on this one. The first one is in a bottle mold only to about 1350 for a 10 minute soak. The second firing is to 1400 on the shelf. This preserves the enamelling better with the lower temp and seems to keep the bubble out of the neck.