Food safe, lead-bearing glazes may NOT be food safe when fired to cone 6. Glazes rated non-toxic and food safe will remain so providing they do not craze. Some Mayco glazes can perform well above cone 6 (Stroke & Coat is one such glaze line) - as always test on your clay bodies to confirm results.
Due to their composition, the following do not withstand above shelf cone 05 firing.
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BG-640 Poppy Orange |
BG-600 Dragon Red |
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Coloramics, L.L.C.
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Hilliard, OH 43026, USA