Making the heart

To make the heart look as realistic as possible i wanted to take a mold from a real heart. The closes thing to a human heart is a pigs one. So i bought a pigs heart from the butchers and bought a molding kit from an art shop. I needed the heart to be soft and pliable to be able to beat when the electronic side of things were worked out. But i needed it to be stiff enough to retain the shape and not just flop around everywhere. I read the instructions for the molding kit, and it told me to mix the paste to resemble a porridge texture. I did this but it was very lumpy and as i tried to beat the lumps out the paste was beginning to set. So i quickly took the pigs heart from the freezer where i had been keeping it to keep it hard, I placed it in a container and tried to pore the mixture over but it was setting so quickly that it had leff gaps and didn’t fill all the way around the heart. When the mixture had fully set i looked at the impression it had made in the mold and it wasn’t good enough to take my cast from, so i had to choose a different approach.