Is it completely hard, like a rock? You could carve it with
Dockyard carving tools, and even pierce it with your saw. You could
cut it into smaller pieces, then run it through a pepper grinder and
use those pebbles in other designs. You could make slip out of it.
It is difficult to rehydrate PMC that has gotten this dry. But if
you want to try, cut it into small, evenly sized pieces, place in
the center of a piece of Seran Wrap, squeeze a couple of drops of
PMC Extender from PMC Tool and Supply on it, maybe three drops, wrap
up tightly, set aside. Wait til that absorbs, add more. Go very
slowly. It's very easy to add too much water and have a substance
that is runny and impossible to work with.
I would really suggest doing one of the alternatives above, such as
slip, you could set up a thin slip and a thick slip and have plenty
Chicago area, Illinois, USA
Metalsmith, Certified PMC Instructor
Studio 925; established 1992