Making a rubber mold
1. And now we are ready to create a vulcanized silicone rubber mould around the silver prototype. Modern synthetic rubbers have been developed to capture very fine details of a model.
2. We attach the sprue to the heaviest part of the prototype and then put it in a suitable mold frame.
3. Now it’s time to start packing the mold with layers of rubber. And when it’s done the mold is vulcanized in a machine that modifies rubber with heat and pressure.
4. The mold is cut into two halves, allowing the model to be removed.
5. Now we are ready to recreate the prototype. Hooray!