So many choices!!! Learning about different resins from different brands.

First timer here, i want to build a foam plug, finish it properly, build a female mold from it, and then build a few identical parts from that mold. sold of a small scale manufacturing project to build myself and. a few friends some parts.

I think I understand the how-to well enough, but am overwhelmed by the material/resin options. is there a concise source that can help me make heads or tales of this? i’d like to understand enough about differences that i can shop around and find the right products