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This is 2026. It uses expressions like "designed for performance", "specifically engineered", "perfectly transparent", "strict limit formulas", "perfect balance", and "ultimate". Really? Doesn't calling a recipe "ultimate" suggest that if one has an issue with it, then the problem is automatically with them, not the recipe? No. Consider:
-Glazes are systems, not recipes. They have many mixing, application, drying, firing, surface and aesthetics properties that interrelate. Add to that cost, material availability and consistency, material solubility, changes with aging and microbial response. These properties all play against each other; if you want one, you have to give up another. You can optimize some of them at the expense of others.
-Non-recipe factors, like firing method and schedule, application methods, body or engobe or slip underneath, and mixing methods, can really affect performance.
-The only recipe that is perfect for you is the one you develop and fine-tune to have the property pluses that favour your priorities and the faults that match what you can tolerate. The expression "perfect balance" thus applies only to Ron Roy who formulated it.
One more reason to become your own glaze engineer.
| Glossary |
Tipping point
Why do ceramic processes seem to work for years and then suddenly fail? Learn how hidden tipping points in materials and methods can trigger production disasters. |
| Glossary |
Base Glaze
Understand your a glaze and learn how to adjust and improve it. Build others from that. We have bases for low, medium and high fire. |
| Typecodes |
A List of Classic Base Glazes for Pottery
These span the range from low to high temperature. Each is a base or a base plus added pigments, variegators and/or opacifier. The glazes are suitable for functional surfaces. It would be common to buy commercial products to enhance non-functional surfaces. These are suggested package sizes for production. Cone 6 Dipping glazes or base coat dipping glazes in 2 gallon pails (~5000g powder) G2934 transparent MgO matte (also commonly mixed as a white by adding zircopax) G1214Z1 transparent Ca matte (common opacified using titanium) G2926B transparent glossy (also commonly mixed as a white by adding zircopax) GA6-B Alberta Slip base (honey transparent) MA6-C Alberta Slip floating blue GR6-M Ravenscrag floating blue G3933A Oatmeal silky matte G2926BL Jet black glossy (commonly mixed as a first coat) G2934BL Jet black matte (commonly mixed as a first coat) Black Engobes/Underglazes in 1 litre jars (~800g of powder) L3954F Black engobe or brushing underglaze for M340 at cone 6 L3954N Black engobe or brushing underglaze for H550 at cone 10R Cone 10R Dipping glazes in 2 gallon pails (~5000g powder) G1947U Base transparent glossy G2571A Dolomite transparent matte GR10-C Ravenscrag talc silky matte GR10-A Base Ravenscrag clear Low Temperature Dipping glazes in 1 gallon pails (~2500g powder) G1916Q (or variants) Cone 04 transparent base glossy G3879 (or variants) Cone 06 transparent glossy |
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