yeh plaster of paris is waaaaay to fragile, i tried to make plaster copies of some LOTR chess peices i had (to use as statues), and their heads wouldn\'t even survive coming out of the mould, the ended up looking ok excpet that their heads were either missing or munted, i would definately use something else for casting if i could find anyhting, i did find a tin or cating resin at the art shop but it was $30 so iwas like no way