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Lost
Wax Process |
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4.
Wax Chasing and Spruing Wax casting will have
some imperfections such as seam lines or bubbles.
After seam lines are removed, more wax is used
to fill holes and repair any defects resulting
from air bubble in the wax pouring operation.
Here the skilled work of applying the solid wax
runners and risers to the wax is taking place.
The runners form channels for pouring the molten
bronze and the risers are essential to allow the
gases from the molten bronze to escape |
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5.
Investing The ceramic-based investment is
then carefully applied by our skill foundry
worker in thin layers painstakingly applied
with a soft brush. Here the yellow of the wax
can still just be seen before being completely
covered. Each layer of the investment hardening
as it dries out, forming a complete "protective"
shell around wax. |
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6.
Burn-Out The ceramic shell is removed from
the slurry room and placed in an autoclave or
a burn out oven cup side down. Either method
will allow the shells to bake and the wax to
flow out, leaving a cavity in its place. |
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