The back of the casting is briefly heated with a 150 000 BTU propane torch to smooth the pour surface.
     Then, while the glass cools, the mold is disassembled.


     The color of the glass changes from white hot in the furnace to yellow during the pour, orange during cooling and finally clear at room temperature.


     The casting team reads the temperature of the glass through these color changes. 

     At the right shade of orange, the tile is flipped onto a wooden loader boards for transport to the annealing oven.




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