I'm looking to start making molds and cast and i'm not sure about the resin and silicone. What type/brand of silicone should I use to make a simple mold and what type of resin should I use, I want to go with the best I guess. Also, where can I purchase These, i.e. Home Depot, online, ect. I've been doing alot of research on mold making and casting and this is the last step, any help would be great!!!