--- In STMFC@..., " Westerfield" <westerfield@...> wrote:
thick walls, use dental plaster. The cheapest resin and easiest to
work with is polyester. However, it is the least safe. It outgasses
styrene monomer which in large quantities can have many adverse
health effects. Urethanes are harder to work with but are safer.
The quicker the cure, the safer because there is less chance of
breathing the fumes. But use ventilation with any resin. - Al
----- Original Message -----that
are in the know here.