Rapid tooling technology is regarded as an important method of reducing the cost and time to market in a new product development process. Silicone rubber mold is frequently employed in the indirect tooling. Based on green manufacturing, an environment friendly process for making large size silicone rubber is developed and implemented in this work. This method provides a new, simple, and green manufacturing to produce large size silicone rubber mold without loss of dimensional accuracy, geometrical accuracy, and surface roughness. The advantages of this method include high yields of the mold fabrication, reducing the cost in the mold fabrication, and environmentally conscious manufacturing. The saving in the cost of the rapid tooling is up to 66.41%.