The ears

To create the ears I cast Rowen's ears using a two part silicone putty, it is really easy to use just mix equal parts A and B and apply to the ear, it sets in about three minutes then once gently removed i cast straight into it with fast cast to create my positives onto which i will sculpt my ears. to do this i took the silicone mould and placed it in a bed of clay which came up level to the silicone i then used a styrene strip as the surrounding wall which was pushed into the clay.

i sculpted onto these with Chavant clay, i only really wanted to just extend the ear lopes so i filed in the rest of the undercuts with carbody filler. i then did the same as with the top lip and covered the rest with a layer of clay but leaving a small gap between this and the sculpted ear lope.
I then built up a clay base around it then made a styrene wall around the ear. then i poured in more fast cast to create the negative side of the mould.

But when it came to separating the moulds i found they had become lock inside, there was too much of an under cut and i had not used enough clay to counteract it.
after doing some research on creating prosthetic ears (http://illustrationrevealed.wordpress.com/category/prosthesis/) i think a i need to split the mould up into more pieces maybe into three or four parts.