Beautiful Blue Glaze
The source describes a medium blue glaze and notes that 1% cobalt carbonate gives a more intense blue; this record preserves the listed 0.5% version. Test on tiles first; use ventilation and appropriate PPE, avoid inhaling dust, review raw-material safety data, and verify functional or food-contact suitability with appropriate fired-glaze testing.
- Cone: 9-10
- Atmosphere: oxidation
- Surface: matte
- Recipe type: glaze
Ingredients
| Material | % |
|---|---|
| Kona F-4 Feldspar | 44.14414414414414 |
| Silica | 20.62062062062062 |
| Talc | 15.115115115115113 |
| Gerstley Borate | 12.412412412412412 |
| Ball Clay (Generic) | 7.707707707707708 |
| Cobalt Carbonate | 0.5005005005005005 |