Human brain mold (anatomically correct)

A mold to make a cast in the shape of an anatomically correct human brain (made using the MiloMi's [model](https://www.thingiverse.com/thing:371899)), including instructions for making the mold and the gelatine cast (see the Post Printing section).
An artist friend of mine needed an anatomically correct model of a human brain that could be melted and asked me to help her. I ended up using FX-grade gelatine and we melted it in a controlled manner using a 3D-printer heated bed.