Can this 5 lb thick walled bowl be fired evenly in an electric kiln. No.

Friday 29th May 2015

When electric kilns, especially large ones are tightly packed with heavy ware, the shady or undersides of the pots simply will never reach the temperature of the element side, no matter how long you soak. In this example, the inside of this clear glazed cone 6 bowl has a flawless surface. The base is pinholed and crawling a little and the surface of one side (the shady side), the remnants of healing disruptions in the melt (from escaping gases) have not smoothed over. The element side is largely flawless like the inside, however it is not as smooth on the area immediately outside the foot (because this is less element-facing). Industrial gas kilns have draft and subject ware to heat-work by convection, so all sides are much more evenly matured.

Pages that reference this post in the Digitalfire Reference Database:

Electric Hobby Kilns: What You Need to Know, Glaze Pinholes, Pitting, Glaze Blisters

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