Incomplete Burn Out

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How do I fire Decals?

Incomplete Burn Out

Incomplete burn out can result in several firing problems including: Bloating of the ware - if the temperature is hot enough, the outside of the piece will seal up before all the gases can escape. As the body becomes plastic due to glass forming, gases trapped inside the body expand with heat and cause bloating and sometimes cracking of the ware.
Glaze defects, such as pinholes - the escaping gases will push through the glaze surface and cause bubbles which pop. If these do not heal, then pinholes will result. Appearance of fired bisque - where carbon burn out is incomplete, the piece will have a grayish cast (white bodies) or may have greenish cast (red bodies). The body will also be more porous and weak.

   

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