Using 3-D Prototyping as an Intermediary in the Reconstruction of Ancient Pottery
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Transcript of Using 3-D Prototyping as an Intermediary in the Reconstruction of Ancient Pottery
Reconstructing an
Ancient Ceramic Plate
Using 3-D Prototyping
Plate Depicting
The Judgment of Paris
Attributed to Lydos Painter
Ca. 560 - 660 BCE
MCCM 2005.87.2
Prior Restoration
Like many objects acquired by museums, this
plate had been previously repaired. The old joins
were released, and the existing fills were removed.
Reconstruction Strategy
1. Create profile drawings from fragments
2. Produce 3-D digital renderings of plate
3. Fabricate replica - “prototype”
4. Make flexible mold from prototype
5. Cast toned fills around ancient fragments
6. Compensate surface decoration to visually
integrate fills with original
Profile Drawings
Precise measurements were
taken of the fragments using
ruler, compass, and calipers.
Profile drawings were created
on graph paper.
3-D Renderings
Digital renderings
were produced from
the profile drawings,
using 3-D imaging
software.
3-D Prototype
The digital files were then
“built” as 3-D forms, using
equipment at the Georgia
Institute of Technology
Manufacturing and
Research Center.
This process is much like
ink-jet printing with
repeated layers of wax.
3-D Prototype
The two halves of the wax prototype were refined
with scalpels and hot tools to remove struts and
ridges that result from the build process.
Flexible Mold
A two-part silicone rubber mold was made from a
section of the wax prototype.
Casting-in Fills
The ancient fragments were placed in the mold.
Casting-in Fills
The mold was closed and weighted. Pigmented
plaster was injected into the mold using a stainless
steel pastry tool.
Fills
The pigmented plaster filled missing areas in the
plate with minimal overflow onto the ancient
surfaces. The plaster fills were then refined with
scalpels and sanding tools.
Integrating Fills
The color of fills was adjusted with dilute acrylic
emulsion paint. Concentric bands in the design
were painted on fills to visually integrate them with
the ancient fragments.
Reconstructing the Image
Although not within the scope of this project, it would be
possible to reconstruct the image, referencing ancient
fragments depicting the same subject by the same painter.
The repeating border pattern could also be replicated.
Materials
• Rhom & Haas Acryloid B-72 resin
• ThermoJet 88® 3-D printing compound
• SmoothON, Inc. SmoothSil® Series 940
platinum-cure silicone rubber
• Mann Release Technology Ease Release 200
mold release spray
• US Gypsum, Inc. Pottery Plaster
• Kremer Pigments earth pigments
• Golden acrylic emulsion paints
Renee Stein
Chief Conservator
Carlos Museum
Collaborators
Susan Blevins
PhD Candidate
Emory University
Jasper Gaunt
Curator
Carlos Museum
Dave Rosen
Director
GA Tech MARC
Nelson Burke
Proprietor
The Engineer Guy
Ron Barnhart
Preparator
Carlos Museum
Eleanor Ridley
Volunteer
Carlos Museum
Project Grant
This project was supported by a grant from the
Center for Creativity and Art at Emory University.