It probably isn't the exact Funko casting, but here's how someone made their own soft vinyl figures (including concave features) using rotocast molds: http://ww

It probably isn't the exact Funko casting, but here's how someone made their own soft vinyl figures (including concave features) using rotocast molds: http://www.mnartists.org/article/how-make-your-own-vinyl-toysculptures http://www.mnartists.org/article/how-make-your-own-vinyl-toy... Basically, sculpt by hand with polymer clay, make a resin cast of your sculpture (from a local vendor or DIY), and send the resin cast to one of many rotocasting vendors, most in China. Here's some examples: https://www.alibaba.com/showroom/rotocast-toy-manufacturer.html https://www.alibaba.com/showroom/rotocast-toy-manufacturer.h....