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Techno Tips - The Kila Goes On...

| Angling the Bricks
To calculate the correct angle that the brick edges must be
bage at, see the diagrams below, The angle will depend on
‘how many bricks make up the circle of the kiln, and the
amount to be cut off will depend upon the interior diameter.
AS little of the brick is cut off as possible, so thal thera are
|notches left between each brick along the curve. These|
inotches allow a better tightening when the jacket is cinched
jup. It is very important when constructing the jig for the
| grinding wheel, to measure its angle perfectly, so that the cut
bricks fit together tightly, in the correct diameter needed. A
\lot of time was spent making small adjustments to the jig so
‘that the angle was correct. This is important because the
bricks must pack together tightly for the kiln to be well
insulated. In hindsight however, we concluded that a chop
saw would be better for cutting the angles because it would
be easier to control, faster, and there would be far less dust

created.
| Cutting the Element Grooves
| To create a seat for the elements to sit into without needing
to pin them, a half-inch dado groove is cut into the flat, 2 1/2
side of each brick that carries elements, That is, each row of
bricks except far the middle row and the extra bricks used for
the extension ring, The groove must run at a downward, 25
degree angle, and go 3/4 inch deep so that the element sits
in the centre of the brick. A diagram outlining the jig built
for this purpose is opposite.
Report prepared by Julia Maika & Matthew Church

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