Make two part molds with silicone mold putty Answered
Make a small batch of silicone putty.
push original into the putty, up to the mold line.
put in vents for air to escape and a pour hole
cover with more putty, but
will the new putty adhere to the old? How do I keep the mold pieces seperate?
If I want to use pewter originals, how do I prevent tin contamination of the mold?