Lynn Barnwell on tue 6 jan 04
Has anyone made plaster bats with Jespson's molds? I have been using =
his plaster bast system for 4 years and opted to make some myself =
instead for buying more premade. No instructions came with the molds so =
I was wondering if any have used it? How much plaster did you use for =
each size? and did it work well for you? =20
I bought the 7", 12" and 20" sizes.
I would appreciate any ideas to keep me from making all the beginner =
mistakes I know I will make if left on my own.=20
I have made some plaster forms with sucess using Vince's book. Thanks =
Vince! =20
Lynn Barnwell
Hinkle Creek Pottery
Corinth, MS
Fredrick Paget on tue 6 jan 04
>Has anyone made plaster bats with Jespson's molds? ...
>................ No instructions came with the molds so =
>I was wondering if any have used it? How much plaster did you use for =
>each size? ........
>Lynn Barnwell
Jepson casts his bats against plate glass. You need two pieces. One
for the bottom and one for the top. Go to a glass shop and buy 2
pieces of 1/4 inch plate glass of the sizes needed. Spray the mold
and the glass with mold release. I use a silicone containing product
called Armor All Protectant which is sold in Auto stores .
Polish it with a rag. Put the mold, large side, down on a sheet of
plate glass and fill it with wet plaster. Use enough to fill up the
mold and a tiny bit extra. Put the top sheet of plate glass on it and
weight it down until it sets up. After that you can take off the
glass and knock the bat out of the mold.
You can use some of the harder plasters like hydrostone or just use
regular Pottery Number 1 . It is up to you. Be sure you use the
correct ratio of water and plaster. Weigh them both with a scale. US
Gypsum gives away a neat slide rule to figure these ratios.
Works fine for me.
Fred
--
From Fred Paget, Marin County, California, USA
fredrick@well.com
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