Here is the forearm. You can see the wire support (down one bone and back the other.
The forearm bones have been roughly shaped at this point.

A light coating of drywall plaster to prepare the bones for the next stage.

After lightly sanding the plaster, removing it in some places, I lightly sprayed the Styrofoam with
a paint that attacks the Styrofoam and eats it away. This was done very carefully. After this, a
second and third light coat with a Styrofoam friendly paint and then some stain rubbed on with a
rag to highlight the etched details.

Here is the finished forearm, ready to attach to a hand.