For casting I take Flumo — a liquid self-hardening casting compound — add the needed skin tone, strain it, and pour it into the molds in a thin stream. This too is a stage full of nuance: an air bubble in the wrong place, an area that didn't fill, or a part that tears when the mold opens — and everything must start again.
After extracting the parts from the molds, I dry and sand each one. This stage carries the most risk: while sanding a tiny hand, a finger can snap off — and then it's back to casting, drying, sanding.
But there's a rewarding side too: this is where I can subtly change the face — adjust the shape of the eyes, add a faint smile. Each casting becomes unique.