Casting Color

In an attempt to try using color in my glass handles, I tried casting an orange-red piece of glass in the same mold I used for my first glass handles. The glass ended up sticking to the mold due to the amount of iron in the glass. Iron is both a refractory and a flux. Fluxes are used in glazes to lower the high melting point of silica. Because of the amount of iron in the glass, the glass ended up sealing itself to the mold. After trying to carefully tap it out of the mold, the mold disintegrated. I will now make a new mold of the same tear drop shape to test other colored glass.