Achievement
Heavy Metal
Heavy Metal is a Terraria achievement. 2 items count toward it: 
Iron Anvil and 
Lead Anvil.
Description
Obtain an anvil made from iron or lead.
What counts
Pick up any of these:
Achievement
Heavy Metal is a Terraria achievement. 2 items count toward it: Iron Anvil and Lead Anvil.
Obtain an anvil made from iron or lead.
Pick up any of these: