With our selection we wanted to advantage of the elastic properties of rubber. We knew that none of the other materials could stretch so we wanted to highlight this feature. Our selection of a silicone rubber with an A Shore 10 hardness value was to get that elasticity we wanted.
We also needed to solve a critical problem in casting. Our casting times where 2-3 hours. We are attacking this problem with an accelerator that will speed up the casting process to 1 hour or less.