Richard Aerni on sun 16 aug 09
Jeremy,
US Gypsum supplies, for free, a slide-rule like calculator for just this =
=3D
kind of situation. It is also included in Frith's book on moldmaking in =
=3D
a pocket in the front. Mine is at the studio, but I'm sure that someone =
=3D
has one near a computer. Give them a call or check out their website.
Best,
Richard
Richard Aerni
Rochester, NY =3D20
www.richardaerni.com
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