z AMCUNT TO BE = o a= e a, © ig. | ¢ os ae Sa Mist 2 page 8 —a —— 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 RMA Ur Pir Ue ALU ALLS «& APPARATUS FOR ANGLING THE BRICKS ([NOUVDI0) MOI dO f APPARATUS POR) ANGL Sites THE BaD ~ TaiMuEs § . oe ow ee. : A On, CW) tine 1G L437 O“L atexy fof ic? . fe, Lt > = Ja4 al z 4 w me = | = ManQaiLe ee = ir | a z = = | ie] wa TAgLE | = a m m | "pe oust couscran Qo Y { DAAWIHG #OT TO SCALE —_———— un (ttf) =3357_ 7 isle" =E2I" 2.92" tan (32.