>>827858YOU don't. early anvils where often made from hard stone like dolomite. if you get a big enough cut of stone, you could easily hammer on it with 5lb hammers without any sort of cracking. and I don't know why everyones getting a hard-on about him making iron.
he should be making bronze, or copper first, as its much easier... I'm not sure what Australia has as far as minerals and metals for his area.. natives would know tho.
