Zombie Clive Skull - Low Melt Metal Mold - Lost PLA (head)

Inspired by this guy and his low melt metal molds,
http://www.thingiverse.com/thing:26500
and some to this guy for starting me on the coding
http://www.thingiverse.com/thing:31581
and this guy, for taking it to the next level (HiTemp-LostPLA)
http://www.thingiverse.com/thing:82176

I chose Clive because he has a ton of detail...and is cool. I realize some more of the mold could have been cut away...this stuff is not easy

I'm not sure if the walls are thick enough for the heat, and I still want to make a shell (hollow instead of solid) But I wanted to get something simple(ish) to go with my print of his shell mold when I pour in next day or so. From the shape of this mold, it can pretty much only be used for Lost PLA.

I am doing several more ver of this before I pour, at least one of them will be useful for other types of molds.