Casting 40k Space Marine helmet

[FubarTheHoly]

Hello everyone, I recently made a Space Marine helmet and I want to cast it to make multiple helmets but what should I use to cast it, and what should I use to fill the mold? Many thanks.

 

[GasmanR]

Bill Doran is your friend.

www.youtube.com/playlist?list=PL6q0fd3ileWLwTQ6pOUb8isS4BYLjkNhH