Nepheline Syenite 60
Magnesium 22
EPK 18
This recipe is very similar to the original; I just replaced
the ball clay with kaolin. This seemed
to make the glaze adhere more smoothly to the tile, and also gave it a
pearlescent sheen. The high amount of
magnesium in this glaze is what causes the crawling effect. It needs to be applied thickly in order to
get a good amount of crawl – I applied it about 1/8 inch thick. It can give interesting results layered over
slips and glazes, as long as the base glaze is fairly dry.
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