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A good base glaze, a vitreous clay and a good fit. How good that is!

Left: Cone 10R buff stoneware with a silky transparent Ravenscrag glaze. Right: Cone 6 Polar Ice translucent porcelain with G2916F transparent glaze. What do these two have in common? Much effort was put into building these two base glazes (to which colors, variegators, opacifiers can be added) so that they fire to a durable, non-marking surface and have good working properties during production. They also fit, each of these mugs survives a boil:ice water thermal shock without crazing (BWIW test). And the clays? These are vitreous and strong. So these pieces will survive many years of use.

A good base glaze, a vitreous clay and a good fit. How good that is!

Links

Articles Concentrate on One Good Glaze
It is better to understand and have control of one good base glaze than be at the mercy of dozens of imported recipes that do not work. There is a lot more to being a good glaze than fired appearance.
Glossary Base Glaze
Understanding your transparent glaze and learning how to adjust its melt fluidity, thermal expansion, color response, etc is a base on which to build all your other glazes.
Glossary Vitreous
Media A 3-minute Mug with Plainsman Polar Ice
Tony Hansen takes you through the steps from opening the box and wedging the clay to taking the fired mug from the kiln.

Monthly Tech-Tip from Tony Hansen

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