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of the Gold
words below are links to pictures which show our sculptures in progress and
an explanation of the techniques we use to create them.
Our bronze sculptures and fountains are made
of silicon bronze which is either cast or
fabricated.
The fabricated work is made of sheet bronze and is hammered, bent,
or hydraulically pressed.
We use three casting methods in our studio:
ceramic shell casting,
vacuum casting, and
sand casting. |
Ceramic shell and vacuum casting begin with a
wax model of our original sculpture. Whether
the pieces are cast or fabricated, they go through an extensive grinding and
polishing process before a hot patina is applied. The
patina process
consists of heating the metal and applying many coats of different metallic
nitrates to the polished or sandblasted surface.
The final step is sealing the surface with wax, or in the case of the
fountains, a lacquer surface which is water and weather resistant.
Finished Bronze Sculptures |
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The above "Moon Sculpture II" is an
example of a piece that is mainly sheet bronze formed by hammering and
bending the metal and then welding and grinding all of the seams smooth.
The ball and the "moon men" supports were vacuum cast. A wax model was
needed for each. The surface of the "moon" and "men" were polished
before the hot patina of a dilute copper nitrate was applied. The base has a
liver of sulfur patina which turns a silvery black. |
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The original for the "Octopus
Box" was a very complex pattern to make. The four sides were carved in
plaster forms and then clay was pressed into the plaster to form the
sides of the box. They were joined together to create the main body of the
box and fired in a ceramic kiln. The little feet were carved in wood
and glued on the bottom. The top was also made of wood and topped with
an octopus sculpted out of a plastic-like clay. We then made separate
rubber molds for the top and bottom to make the red wax model needed to do
the shell casting. A wax model of the top and bottom is
needed for each box. The waxes are then shell cast. After the metal
has cooled the defects and gating are removed and the surfaces are polished.
Liver of sulfur patina was applied to the bottom and top of the box. The
detail, frame, and octopus were then polished and a dilute cupric nitrate
patina was applied to turn them gold. |
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