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This base can give extremely brilliant colors; I’ve had particular success with red copper oxide. I’ve also noticed that cobalt is far less likely to felt up when used with this glaze, even when a large amount of colorant is used. Mixtures incorporating ilmenite and/or rutile work very well with this recipe, giving very large, quickly growing crystals. The crystals do not show the variation in shape one sees with the Ferro 3110 based glazes.
| Step | °C | °F | Hold | Time | |
|---|---|---|---|---|---|
| 1 | 100°C/hr to 200C | 180°F/hr to 392F | 0 | 2:02 | |
| 2 | 250°C/hr to 500C | 450°F/hr to 932F | 0 | 3:14 | |
| 3 | 500°C/hr to 1275C | 900°F/hr to 2327F | 0 | 4:47 | |
| 4 | 9999°C/hr to 1130C | 17998°F/hr to 2066F | 15min | 5:03 | |
| 5 | 30°C/hr to 1075C | 54°F/hr to 1967F | 0 | 6:53 |

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With a little iridescence from post-fire raku. The green is a true emerald green and very brilliant. Crystals do form very fast, however, and I have seen them attain an entire centimeter in diameter in as little as fifteen minutes
| Recipes |
GC106 - GC106 Base Crystalline Glaze
Cone 8-10 - Most other GC106 recipes are based on this. |
| Typecodes | Oxidation Firing |
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| By Tony Hansen Follow me on ![]() | ![]() |
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