随着新材料和新工艺的开发，塑料大量铸造材料在模具和模具中的使用变得更加成功。环氧树脂注塑模具已被证明成本更低，所需时间更少，并提供高质量的原型零件。

USE OF PLASTIC MASS CAST MATERIALS FOR MOLDS AND DIES HAS BECOME MORE SUCCESSFUL AS NEW MATERIALS AND PROCESSES HAVE BEEN DEVELOPED. INJECTION MOLDS OF EPOXY HAVE PROVEN TO BE LOWER IN COST, LESS TIME REQUIRED, AND PROVIDE QUALITY PROTOTYPE PARTS.