Mold making for wax designs

Hello, I am new to jewelry making and new to posting on this list. I
am a sculptor who is branching out into jewelry. I have worked with
molds for bronze casting for years, But I would like to know about
making molds for wax designs that are going to be injected. I am
certain that there are sources online and perhaps at
Ganoksin.com…I was wondering if someone would be kind enough to
give me there thoughts on the best sources to learn about this? I
thank you for your time

Maureen