Copper Anvil
Appearance

A Copper Anvil is the first of the 3 tiers of anvils. It allows players to make bronze, which is required to mine iron. The crafting recipe for a Copper Anvil is the same as a vanilla anvil, but with Copper.
Durability
Anvils have durability just like in vanilla. This means that anvils will have to be remade/repaired as players are using the anvils to make alloys. This increases the effective material input of tools/weapons/armor without directly increasing the inputs in the crafting recipe's themselves.