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One
of the most important steps is to spend the time needed with our
client to determine the style and type of jewelry desired.
Considerations about the materials to be used, such as our
gold, silver and stones or we can use our client’s precious stones
and metals from old unworn jewelry or inherited heirlooms.
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The
next step is to carve the wax model (as seen above) to be used as the
mold for the casting. To
carve we start with a block of wax and carve it to the exact design
decided on by our client. The
art of carving is difficult and takes many years of practice to
perfect.
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The
wax model is shown to the client for their approval.
Now is the time for any changes to be made while it is still in
wax.
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The
wax model is then prepared for the casting by applying spru’s to the model. A
spru is a wax wire that provides a smooth channel for the molten metal
to flow into the model.
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The
wax model is now prepared for the casting by mounting on spru base. Investment (a cement like compound) is then mixed and poured
over the wax in a metal flask.
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The
flask holding the wax model is then placed in a burnout oven and
heated up to approximately 1500 degrees.
The heat burns out the wax model from the mold leaving the
inside as mold in a flask ready for casting.
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At
this point the flask is fitted in a centrifugal casting unit (seen
below) where the metal is melted with a gas-oxygen torch.
The desired temperature must be attained and then the
centrifugal caster is released to force the molten metal into the
mold.
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The
flask is then cooled in water and the investment is dissolved or
broken away to reveal the newly cast jewelry.
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Now
is the time for finishing the jewelry by grinding and polishing the
piece. This step is very
labor intensive.
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With
the pre-finish done it is time to weld the setting for the stone in
place and set the stone.
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The
final burnishing and polishing is done to achieve a beautiful finish.
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The
final most exciting step is to present the finished piece to our
client (seen above).