Pottery

Plaster, firings, costs: the part of pottery you calculate before getting your hands in the clay.

• How much does a kiln firing cost?

  Work out a firing’s electricity cost: kiln power, duration, element duty cycle and your kWh price — bisque or glaze.

• Plaster for a mold: exact plaster and water quantities

  Work out the plaster and water to weigh for pouring a mold: cottle dimensions, model volume to subtract, mixing consistency.