Thanks ksoc that link is great for showing how to make molds useing silicone molding compound. I use Dow Corning silicone molding compound but any brand will do. That link saved me alot of typeing lol thanks for the link and no you didn't rob me of the of doing the How-To lol
I use their method and what I call the skin mold type as well. Rather than pouring a solid block I apply several thin layers of the silicone to the item. Skin molds are better for intricate detailed items but is basically the same procedure. Dow Corning makes several types of molding compound. I usually use the J type. One thing about silicone molds is that they do have a shelf life. The molds will become brittle, not that they become hard like the resin but will tear and crumble. Heat and time is the killer with these molds. NEVER use the silicone in the tubes from the hardware store because if you don't use a good mold release the part you are molding will be ruined by the silicone sticking to it.