Part two of my tests with citadel sprues melted in Acetone. Melting them in the acetone is easy. It also is simple to mold and model with. Here I use OYU-Maru as the mold.
Didn't want to use silicone or resin so I tried to find a simple way to use my extra citadel sprues to model extra parts for bases and decorations on existing characters. I think Oyu Maru might be a good and very cheap way to make molds with the melted sprues.

Good luck with your models.