Originally Posted by Lawrence Duckworth
There is one inch of insulation covering the ceramic/metal clamps. In the duckbill photos I have it appears to me to be covered in dip also... Its not a problem to cut the insulation out of the way if you guys think leaving them covered is a disadvantage.
It isn't covered. The frax is right up to the edge of the brick. We use diplag to hold everything together. Cool the elements. Don't bore the bricks too tight. Things expand.