Even if I wasn't mental for Micronauts, I'd still consider Gold Dober's blog to be one of the best places to learn how to make molds and casts. I've trawled through years of his posts and sent him an abnormal number of e-mails getting advice on how to make posable action figures. I have some of his stuff and it looks and feels like it's form a shop. There is no element of it that makes it feel homemade, short of lacking a trademark on it. If you're interested in getting into this, his blog, especially his earlier stuff about what kit to get and why, is really useful.