Lava Fleck

Lavafleck 151-1514

• Recommended firing range 1200-1270C (Cone 6-9)
• Indicative texture 4-5 (Smooth 1-Coarse 10)
• Indicative % Total Contraction @ 1100C 9%; 1200C 12%*
• Popular for its distinctive rustic, flecked character
• Good handling for throwing
• Kiln shelves must be well coated with refractory wash to prevent sticking during firing
• Standard full bag size 12.5Kg

Information about our basalt flecking agent:

Please note that basalt is a naturally-occurring mineral. The user must sample/batch test in their own application before proceeding as we cannot accept any liability for fleck variation which is outside of our control.

Fleck size and density: Variable from batch to batch due to the characteristics of the raw material supplied to us. 

Melt properties: Can be variable, sometimes causing raised flecks on the surface of the fired ware. Our tests show that a sufficient glaze layer will 'flux' these flecks causing them to flatten out. Unglazed areas can be wet-sanded after firing. This characteristic is not evident in our reduction-fired tests.

Microwave Use: Basalt is an iron-bearing compound which is not metallic, therefore fired ware can be used in a microwave.