The free radical cure (FRC) process has been selected for many new installations because it enables the foundry manager to operate a core-
and/or moldmaking process without the high costs of downtime associated with mixer and machine cleanup.
Shell resins and resin-coated shell sand essentially contain and emit no formaldehyde during core-
and mold-making, unlike some commonly used chemical systems.
The speed and economics offered by the _SO.sub.2] and FRC coldbox binder processes provide an edge over older, traditional core-
and moldmaking systems.