Kevin--
I received this "recipe" for latex peels from a colleague a few years
ago. I haven't tried it out, but I know at least one archaeologist who has
used the method, and it does work. Obviously, there are probably many brands
of carpet seaming adhesive on the market that would do the job just as well.
Pam
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LATEX PEELS
Recommended material:
Roberts Weldwood 0502 Carpet Seaming Adhesive, Latex Base, Freeze-Thaw
stable (don't use the "water proof" version of this material!!);
cheesecloth;
1/8" or 1/4" plywood, or other rigid backing material (cut to the
approximate size of the peel, remembering to make the peel slightly
larger than the final desired size;
nails or chaining pins to hold cheesecloth in place;
spray bottles (have several on hand, they tend to gum up with the latex
material).
Procedure:
1. Smooth the profile face as flat as possible, cut back edges to isolate
desired column;
2. May be advisable to moisten surface to enhace permeability of the profile
face;
3. Spray surface with a dilute latex solution (e.g., 5 parts water/1 part
latex);
4. Spray repeatedly with dilute solution, allowing latex to dry (at least
get tacky) between coats;
5. Spray with less dilute solution (ca. 2/3 latex-1/3 water);
6. Apply cheesecloth to profile, hold in place with chaining pins or nails;
7. Spray cheesecloth with latex solution, press onto profile;
8. Layer full strength latex and cheesecloth, let dry between coats;
9. Smear on a thick coat of latex, press backing board into latex and let
dry overnight;
10.Peel profile off, cutting it away with a trowel;
11.Lay flat and protect the surface;
12.If column is being prepared for exhibit, the surface needs to be
stabilized. Use what soil scientists use for fixing soil monoliths
(vinylite resin, cellulose acetate, requires nasty solvents, fume hood. etc.
Talk to someone in a soils lab who does this kind of thing.
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Pam Endzweig
Collections Manager & Staff Archaeologist
University of Oregon Museum of Natural History
Eugene, OR 97403-1224 [log in to unmask]
Pam Endzweig
Collections Manager & Staff Archaeologist
Oregon State Museum of Anthropology
University of Oregon Museum of Natural History
Eugene, OR 97403-1224, USA Phone (503)346-5120
[log in to unmask]
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