In a message dated 5/23/2005 5:44:59 PM Eastern Standard Time,
> QUESTION - - - Is it best to make plaster sculpture with dry plaster blocks
> that have been allowed to dry our or damp blocks that have been recently
> poured and stored in plastic? I guess the damp plaster would make less mess but
> I fear that our sculpture tools will rust from the damp plaster. I could
> use your expertise! Thanks.
> Dry plaster may chip and is harder to carve away. Also depends on the tools
that you use. Are they sculpture tools? Plastic knives? Wooden clay tools?
I let the forms harden somewhat and we carved when they were semi- moist.
Meanwhile, we studied Henry Moore's work. They did well and did not break small
parts even when making "holes" through the forms. We stored them in zip-lock
bags until we were finished with the forms. Then we let them air dry.
here's a tip: Add used coffee grounds to the plaster when mixing. It takes on
a tan color and looks like stone with the little flecks of brown. We sealed
them with gloss acrylic medium.
We fooled everyone. They thought we carved in stone!