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is a foundry dedicated to casting artwork. A dedicated art
foundry is important because casting and finishing your sculpture
requires very specialized work. |
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To
avoid lost time and ensure completion of a project with
maximum satisfaction, close liaison between the artist and
ARTCAST is essential. It is important that we have all the
information concerning your sculpture when an order is placed.
For example, information regarding the desired finish of
the piece, whether it is to be polished or patinated, details
of the mounting requirements and so forth, should all be
included.
Set
out below are details that the artist and the foundry should
be concerned with, before a project is started.
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When modelling more intricate forms, armatures are used to
reinforce the softer modelling materials. Very complicated
original models have to be cut for easier molding, in which
case knowing the location and material of the armatures helps
to ensure a clean cut. Whenever possible, avoid using wire
armatures if your original is to be cast direct. A plastic
or wood armature is ideal as it can be burned out. Always
inform the foundry of any foreign material in your wax original. |
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When making a wax
model from a mold it is essential that certain criteria be
met, since the quality of the wax model determines the quality
of the casting. Depending on the size (volume) of the wax
model, it should be either solid or hollow. The ideal thickness
of a hollow wax model should be about 3/16" (5mm) to 1/4"
(6.5mm) maximum and it should be as uniform as possible. ARTCAST
prefers that the wax is thin (less than 3/16") rather than
too thick. The wax should be free from flaws, such as flowlines,
pinholes and so forth. For a polished casting the surface
of the wax must be smooth and should have no ripples or other
imperfections. It is also important that the inside be as
smooth as possible. To make a wax model, one can either pour
or brush the wax into the mold. Signatures, trademarks, edition
numbers, etc should all appear on your wax model. |
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It is important
that ARTCAST knows in advance the positioning details and
the mounting requirements for the finished sculptures. The
pin, bolt or hole locations should be clearly marked. If the
positioning angle is critical but not obvious, the artist
should either be present for the mounting, or mark the piece
with a permanent marker or provide sketches/templates with
measurements. |
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Patination is the chemical colouring of the bronze and patinas
in a wide range of colours can be achieved, including various
shades of green, red/gold, brown, black and others. However,
since it is a chemical process, an 'exact colour' cannot be
guaranteed. Even subsequent castings may vary somewhat in
colour. Some patinas are not suited for outdoor pieces because
the weather will adversely affect them. Outdoor bronzes may
be maintained by waxing regularly, but more often they are
left to the elements to enhance their patina. The desired
finish should be discussed with ARTCAST prior to casting. |
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A
polished mirror-finish on a bronze is attractive, but it is
also costly due to the lengthy polishing process. To ensure
a good casting and a good polished surface, ARTCAST should
start off with a smooth wax model, free from pinholes or ripples.
Polished bronzes will tarnish and should be cleaned regularly
with a good metal polish and a clean soft cloth. Waxing and
lacquering are only short-term solutions for 'maintenance-free'
polished bronzes. Wax may be expected to last only a few months
and lacquer scratches easily and will fail after a few years,
requiring stripping and re-lacquering. |
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