The ceramic shell is fired in the kiln

The ceramic shell is fired in the kiln

INVESTING - The wax is layered inside and outside with repeated coats of a ceramic shell material. The ceramic shell technique begins by dipping the gated wax into vats of slurry followed immediately by a bath of sand. This process builds a very thin wall of silica around the wax. When repeated approximately 9 times, allowing for drying time in between dips, a hard ceramic shell, about ½" thick, forms around the wax. This ceramic shell is fired in a kiln and the wax is melted out leaving a 1/4" space that was occupied by the wax.
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The ceramic shell is fired in the kiln

INVESTING - The wax is layered inside and outside with repeated coats of a ceramic shell material. The ceramic shell technique begins by dipping the gated wax into vats of slurry followed immediately by a bath of sand. This process builds a very thin wall of silica around the wax. When repeated approximately 9 times, allowing for drying time in between dips, a hard ceramic shell, about ½" thick, forms around the wax. This ceramic shell is fired in a kiln and the wax is melted out leaving a 1/4" space that was occupied by the wax.
Ref:
Date:
Location:
Photographer: