Scansite Case Study
Robert Graham Studios
Bronze Sculpture
Problems and Opportunities:
The original sculpture was provided at approximately
28% of its final size. An extremely high level of detail
capture was required to be faithfully reproduced in the
pattern.
Downstram Application:
A pattern for bronze casting was to be milled on a five
axis CNC milling machine, so an
Iges128 (Nurbs surface) was required. The pattern was milled
out of hardened wax and sent to the foundry for casting.
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| 1. The original sculpture was scanned
on three different scanning systems and the data combined
to achieve a 1.7 million polygon file |
2. The polygonized mesh was brought
into our CAD system and organized into 1,632 patches in
preparation for Nurbs Surfacing. |
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| 3. A Nurbs surface (iges128) was
generated. The Nurbs surface is "watertight"
and all patch boundaries are tangent |
4. The Nurbs surface with patch
boundaries shown. |
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5. The Nurbs surface has been interrogated
for fidelity with the polygonized mesh and a color map
generated. All Nurbs patch areas shown as grey are within
.005mm (.0002 inches) of the polygonized mesh! |