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Okay, did the third try with a bit more success, but not completely happy. Fused the three sheets of glass together first for 3/8" thickness-great! Made the mold for slumping into-also great. Took it real slooow to 1250. Okay. Let it soak for 25 minutes, lip starts to curl in. I'm not sure if I...

WOW!
Love your work Marty. I promise to go slow. This is the third attempt at slumping the sink, hoping that the 3rd time is the charm. By the way, how thick are your pieces?

Hey Marty,

Thanks for the reply. No, the puddle was ordinary. How slow is SLOW? Are we talking 200dph or slower?

Okay, I'm trying to slump an oval sink. Nothing too big. It measures 13" x 9.5" x 5" and 3/8" thick. First, time I fired to 1250 got a good slump going but not quite to the shape of the mold I was firing it into. Second time around I fired to 1350 and the glass ended up in a pudd...

Hi Charlie,

How long is long enough?

The mold by the way was 2.5" thick done in three horizontal sections and reinforce with chicken wire with additional mold material. The firing was held at 1500 degrees for an hour. I had done a visual check to see if the glass had filled the mold.

I just casted a head shape piece that is approx. 12" tall 9" wide and 3.25" thick. The piece was casted inverted with the neck area to the top. I filled the cavity with Bullseye glass(chunks and frit). Fired to 1500 degrees. Glass in neck area melted but when I opened the mold the res...