Making custom molds for casting resin is quite easy when you have the right products! It’s very time-saving when you need to make many identical copies of an object. In my case, I had to make 8 golden rings for my Margaret cosplay. I could have made those out of Sculpey or any other baking clay, but sanding all those down would have taken ages. Making a mold also ensures that all the resulting pieces will be identical!
There are many products you can use to make custom molds, but Gedeo Siligum was the easiest to obtain for me so that’s what I ended up using.