Is it possible to make a thin flat porcelain tile from a plastic pottery body?

Friday 25th October 2019

Yes. The body is Plainsman M370 (~ 25 silica, 25 feldspar, 30 kaolin, 20 ball clay + talc to tune maturity). It is 3.8 mm thick fired (vs. commercial tiles at 5-7mm). It was rolled (in the plastic state) and dried completely between sheets of plaster board. Bisque and glaze firing were on an alumina shelf in an electric pottery kiln (at 300F/hr up through quartz inversion on the glaze firing). Cooling on both firings was free-fall in a fairly empty kiln. It is flat and flexible enough that I could lay it on the cement floor and stand on it without it breaking! Of course, to produce these consistently special furniture that sinks minimal heat and a kiln that can evenly apply it front and back are needed. This is doable for custom applications. Of course, to compete in the commercial market, they need to be dust-pressed and there are lots of specifications to meet.

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Ceramic Tile

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