Kurt Wild on sun 27 mar 05
Earl:
Your question - "1. You used a double row of bricks for the walls. As this
adds a fair chunk of change to the cost of the kiln I was
wondering why. "
Many electric kilns that fire to lower temperatures have only one brick
thick (4-1/2") walls but they are jacketed with some other material usually
metal.. As I said, if you should decide to go with only one brick thick
you should check with your brick supplier to see what the heat loss would
be. Determine burner size and fuel input and how much more fuel would be
required and with all of that if you could reach temperature or not.. If
you were to chose to go with only one layer of brick you would also need to
jacket the kiln with cement board - years ago asbestos board (transite) was
used for that purpose. Another reason for a double layer is that the
second layer of bricks is laid so that the joints of the first layer are
covered.
In the end I'd suggest the additional expense and go with double brick walls.
Kurt
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