Cone 6 oxidation (larger image): Black Timber is a satin, opaque, mottled brown glaze that breaks over texture. Contains glossy brown crystals. Base color is stable, crystals can create movement.
Cone 10 reduction (smaller image): Color becomes darker metallic, crystals flow more. Light application recommended.
Tips:
Upon opening, crystals will be concentrated in the bottom of the bottle. Stir/shake thoroughly to incorporate before each use.
Crystals can create movement. Avoid having a heavy concentration of crystals near the bottom of your piece.
When storing a crystal glaze, you may consider storing upside down to make crystal more accessible.
Can be used in oxidation or reduction firings. Results may vary.
The choice of clay body, thickness of glaze application, firing process and temperature will affect the fired results. Always test in your kiln, on your clay body