I did not use an epoxy resin. My oldest son was still living at home when I started casting the plugs. He designed and made miniature figures for board game competitions at the time. He had polyester resin on hand. So that's what I used. It is available here in the US in many craft and hobby shops (like Michael's). They sell it in various quantities. I used a variety of release agents over time. I liked using car wax best. It left a smooth surface inside the mold and didn't need a lot to work. You can also buy complete casting kits at the craft shops if you like. I used what we had on hand.fearfeasog wrote:What "release agent" do you use in the tube for the molding, and is there a brand of epoxy you like and works well that you'd care to share the brand name of?
The Polyester material takes a while to cure. I would fill a set of molds and let them cure for a week or more before popping them out. They could still be tacky after that time period if I did not get the catalyst mixed right. So expect some trial and error. You can probably shorten the curing time by adding more catalyst. So just read the instruction materials that come with the resin. The resin gives off vapors. You will want to work in a ventilated area or wear appropriate safety gear.
Have fun.
Feadoggie
