Obsidian, Deep Firebrick and Albany Slip Brown

BMIX Cup By Dan Osorio

This beautiful cup showcases a rich, layered glaze combination using AMACO glazes Obsidian, Deep Firebrick and Albany Slip Brown. Applied over Venus White clay and fired to Cone 6 in an electric kiln, the result is a dramatic, high-contrast surface with warm, glowing depth and beautiful lava-like movement.

The process starts with three coats of Obsidian as the base glaze. Over this, two thick coats of Deep Firebrick are brushed onto the top two-thirds of the cup, including the inside walls. Finally, two coats of Albany Slip Brown are applied on top of the Firebrick, both inside and out. This layering creates a cascade of rich reds, dark browns, and subtle black undertones, mimicking the look of molten rock or weathered bark.

The interior pools into a dark, glossy black, while the exterior blends into fiery, earthy textures that break gently along the surface. The subtle transitions and slight gloss variations enhance its handmade character.

• Clay body: Venus White
• 3x AMACO Obsidian all over
• 2x Deep Firebrick thick around 2/3 top and inside walls
• 2x Albany Slip Brown over the Deep Firebrick inside and out
• Fired to Cone 6 in an electric kiln
  
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Credit: Dan Osorio