I will discuss the process of casting beginning with choosing a piece to cast, making the mold, and casting a piece from the mold.
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Step 1: Before you start: The Setup
Time: at least 2 hours for a small project
-Nitrile gloves (NOT silicone gloves)
-4 paper cups for measuring
-2 paper cups for mixing
-paper or plastic cup to hold the silicone
-hot glue gun
-wooden mixers (popsicle sticks)
-something to mold
-urethane liquid plastic resin
-Ease Release agent
You should coat the surface that you're working on in a disposable material to catch any spills. It would also be a good idea to have paper towels on hand to clean up messes.
Necessary materials can be purchased from websites such as http://www.smooth-on.com/