Dana Henson on wed 4 nov 98
Try the dental product, Alginate. It picks up all of the detail without losing
the original object. You then cast this in plaster, eventually ending up with
the mother mold.
Dana Henson
Steven Rushefsky on thu 5 nov 98
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----------------------------Original message----------------------------
I bought a beautiful and very fragile shell today whose
pattern I would dearly love to use on some pots. I'm
guessing that I get only one chance to make a mold from
this shell and then it is history.
What experience and wisdom do you have to share on this?
--------------------------------Reply----------------------------
Dear Jan,
Two companies, Polytek in Lebanon, NJ at (908) 534-5990 and Cementex in NY, NY
at 1-800-782-9056 both offer free introductory catalogues, and not-free deluxe
catalogues, sample kits, descriptions of products, etc. They are guaranteed to
have something for fragile objects like a shell.
Steven Rushefsky, NYC
StevenRu@aol.com
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Reid Harvey on thu 5 nov 98
Hi Janet,
I guess one question is, just how fragile is your shell?
Can you push it into a powder. For example, airate some clay powder and
push it into this. That will give your shell support from behind. Then
you can build up moist clay around the shell, so the face of the mold is
on one plane, so to speak. I take it you only want a one piece mold.
If by chance your powdered clay (under the shell) will not keep its
shape, you may want to have about 8% water content in the powder. You
can add this in by spraying or spritzing the water, little by little,
and mixing between the additions. When you reach a point where you can
squeeze the clay in your hand and it keeps its shape, then you've got
roughly 8% water content.
This is one idea. Let me know how it goes.
Reid Harvey
Ceramiques d'Afrique
Abidjan, Cote d'Ivoire
>I bought a beautiful and very fragile shell today whose
>pattern I would dearly love to use on some pots. I'm
>guessing that I get only one chance to make a mold from
>this shell and then it is history.
>What experience and wisdom do you have to share on this?
>I have some notes on a post from Lowell Baker from a year
>ago about using silicon caulk to get an impression from a
>pattern that is already pressed into clay. But I'm afraid
>that trying to press this shell into clay will just
>destroy it outright.
>I've seen rubber or latex mold stuff in catalogs (you brush
>it on?) but don't know whether that would be intended for
>this kind of use or not.
>Ultimately, I'd like to get something from which I can
>make a plaster stamp.
Ideas?
TIA
Jan Walker
Cambridge MA USA
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