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Robert Oblon
Joined:
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04-Aug-2004
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Started On : 23-Dec-2006 at 01:00:03 PM, #Views : 6023
Topic Subject : Re: A new topic has been added-New Work: Pregnancy |
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Doug
I think I may have deleted one topic but I hope this helps.
All of my body casts end up in cast bronze via ceramic shell molds. After I
do an alginate mold I immediately brush wax into the alginate mold to get my
first wax positive. If I wait to long, as you know, the alginates will start
to loose moisture and shrink. I use an industrial sculpture wax that is very
hard that I then mix with microcrystaline wax to give it flex and workability.
I do all of my wax brushing at one time and overlay each brush stroke with
more hot wax. The wax I use is about 200 degrees F. when I'm brushing, any
colder and I get brush mark separation. If the wax is to hot it will shrink more
and possible distort. I think one major key is using a high quality
pattern/sculpture wax. I purchase my wax from JF Macaughin, in Los Angeles.
Cheers
Robert Oblon
Central Coast Art Foundry
Arroyo Grande, California
805-748-5381, Fax 805-980-4890
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