chris123

I'm attempting to transition from fully thrown plates to partially slab constructed to save time and effort. The first iteration of the plates are simple with a flat bottom, no foot, and a short turned up (nearly vertical) side about 3/4-1". The problem I have is that after the glaze fire the center of the plate has risen up and there's a hump that goes nearly from edge to edge. Before the glaze firing, the greenware and bisqueware plates are flat and look fine. My process: Roll the slabs out to about 3/8" thickness Cut into rough circles by hand Toss on the wheel and flatten down on a bat Cut to a perfect circle While on the wheel, turn the edge up with a wooden tool and my hand Once it's dry, remove from bat and cleanup any edges with a sponge. Bisque fire flat on kiln shelves, glaze and high fire the same way.