jighopper

I'm new here, and I was wondering if anybody has used silicone putty to make a jig head? I have been making my own jigs for 35 years and recently fished with a friend who was using a jig made by a company, and he gave me one.. I love that jig head and none of my 30 molds are anything like that jig. I saw on the internet videos of a silicone putty that people are using to pour jigs. Granted it would not last very long from the heat. But if I could get 2 dozen heads from it i would be a happy camper. They are for my personal use. Thanks for any and all help.