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Antique intaglio impressions


#1

I have seen others have good luck using polymer clay to make
impressions of intaglios, carving into stone opposite of cameos, but
I want to avoid 2 stages. I also have not had good luck removing the
clay from the glass intaglio without warping the images. The best
impession I have obtained is from Kerr Extrude Wash, but I then would
need to make another mold to get a positive, and I cringe at doing a
mold of a mold. I have bought Protoplast as suggested, a 24" x 24"
sheet, and I have made one attempt, and it’s gonna take more attempts
to be sure that is good stuff.

I am still looking for a material to make a great impression of an
intaglio. This is NOT a casual question. I have used sculpey,
parafin, injection wax, sealing wax, hot glue, sprue wax and do not
get consistent or good results. It seems that with a larger intaglio
in a 1.5 x 1 inch oval there is just too much to go wrong. I still
hope to get serious with the Protoplast, but I was not pleased with
the single attempt, as it left the ripples in the flat surface
because it does not cool instantly.

I have talked to customer service at Kerr who did not even read my
questions well. I had to ask twice if Extrude Wash could be burned
out, and then when I asked if there was another material to use,
they said just use injection wax in the extrude wash, but that would
just get me another negative. I have talked to owners of other
companies at other times who were more than gracious like what to use
as a release agent for Castaldo Pink. The anwer was paste wax. I’m
going to have to give up and get more Castaldo Pink!


#2

Jay,

Have you tried any of the dental impression materials like the
alginates? They are designed for highly detailed, non-shrinking “in
situ” impressions, and may give you what you need to get the
impressions you want.

Just a thought…

Karen Goeller
No Limitations Designs
Hand-made, one-of-a-kind jewelry


#3

Dear J See:

Since you only need a one-sided impression, I’ve always found the 2
part epoxy material used in the dental industry for making
impressions for crowns. Check with your dentist, I’m sure he/she
would sell/give you some to try. Simply mix it up per instructions
and press the stone face down into it, wait for it to firm up and you
have a mold from which you can make a few waxes by melting flightly
flexible wax into it(the mold dosen’t last for more than 2 or 3
waxes). Now you have a perfect duplicate of the intaglio or any other
one-sided piece.

Hope this helps,
Steve Klepinger