Botz Pro 9621 Fire Opal Ceramic Glaze

Botz Pro 9621 Fire Opal produces warm, fiery opal colours on ceramic pieces. Its wide firing range lets you use this glaze on earthenware and stoneware.

Botz Pro Glazes

Botz Pro is a range of ready-to-use brush-on ceramic glazes with a broad firing range of 1020–1280°C, suitable for both earthenware and stoneware. Their appearance changes with firing temperature. At around 1050°C, colours are generally stronger and almost opaque. At around 1150°C, they retain their colour while becoming more semi-transparent. At around 1250°C, they develop a glossier, glass-like surface with softer, pastel tones. For most colours, Botz recommends 2–3 coats at 1050°C and two coats at around 1150–1250°C. Thick application can cause the glaze to run, especially from 1150°C upwards. The manufacturer recommends the range for tableware, provided the glaze is fired correctly and is compatible with the clay body. Test the result on a sample before glazing finished work.

Botz Pro 9621 Fire Opal Ceramic Glaze

• Fire Opal creates a warm, fiery colour inspired by the gemstone. It can become more glassy at higher firing temperatures. Make a test tile to assess the appearance on your chosen clay body.
• The Botz Pro range has a broad firing range of 1020–1280°C and can be used on both earthenware and stoneware.
• Apply the ready-to-use glaze with a brush to bisque-fired ware. Botz generally recommends 2–3 coats at about 1050°C or two coats at about 1150–1250°C.
• The fired result depends on temperature, coat thickness and clay body, so always make a test tile before glazing a finished piece.
• Thick layers may run, especially above about 1150°C. Leave the foot unglazed and protect the kiln shelf as appropriate.
• Botz recommends the Pro range for functional tableware when fired correctly and used with a suitable, properly matured clay body.