Hello. I'm an engineering student so don't make fun of me. I'm trying to mold an elastic cylinder. My plan for doing this is to: 1. Print out a plastic mold. 2. Buy elastic material. 3. fill the mold with elastic material. 4. wait 24 hours. I'm trying to make the cylinder as elastic as possible. Which material should I use? Can this be done at room temperature in order to prevent the plastic mold from melting? Please help. The more information and advice I can get the better. Thank you.