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FrogBlog — Enameling

Venting Your Kiln; Why & When?

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Venting Your Kiln; Why & When?

When I first started fusing glass in 2001, the subject of venting your kiln was really not much of a discussion. Everyone vented the kiln to cool it. The kiln manufacturers would wince when the topic came up. They hated it, but we all thought that was what we were supposed to do.  In glass fusing we called it "crashing" or crash cooling. We basically opened the kiln at 1470F (full fusing temperature) and then let cool air into the kiln until the thermocouple reading was below 1200F. This might have to be done a few times to account for...

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What does it REALLY cost to run my kiln?

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What does it REALLY cost to run my kiln?

Sometimes we would rather put our heads in the sand then face the reality of what it costs to run our kiln. Don't worry! Firing your kiln costs less than you’d imagine. Even though a kiln draws electricity, it does not draw it continually, so during a typical glass firing, a kiln's elements are drawing power only a fraction of the time. Most digital controllers allow you to enter your cost per kilowatt hour for electricity and they will report back the cost of the firing.  Here’s one formula for calculating the cost of firing your kiln: 1 = Amps2 =...

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