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This is L4410P, a low fire white burning dolomite body. It has a high porosity and there was some doubt about whether it could develop an interface with glazes at cone 05. To do this test we bisque fired a small tile of the white body to cone 04 and applied two coats of Spectrum 700 clear glaze. Then we laid these 8mm square porcelain tiles on, they have a convex underside so only contact around the edges. After firing to cone 05 we broke a couple off using a metal tool. As you can see, the impact broke out chunks of the body on one side and some of the porcelain tile has been left on the other. The difficulty of breaking them off and the appearance of the break are good indicators that this transparent glaze is body well with this body.
Tests |
Glaze Body Bond Test
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