To make an anvil in Minecraft, you need a total of 31 iron ingots. Here's the step-by-step process:

1. Gather Iron Ingots : Mine iron ore and smelt it in a furnace to get iron ingots. You need 31 iron ingots in total.
2. Craft Iron Blocks : Use 27 of the iron ingots to craft 3 iron blocks. Each iron block requires 9 iron ingots, so fill all slots of the crafting table with ingots to make each block.
3. Arrange Materials in Crafting Table :
   • Place the 3 iron blocks across the entire top row of the 3x3 crafting grid.
   • Place 1 iron ingot in the center slot of the middle row.
   • Place 3 iron ingots filling the entire bottom row.
4. Retrieve the Anvil : After arranging the materials as above, you can take the anvil from the crafting table output slot.

This recipe requires a crafting table and a significant amount of iron, but the anvil is essential for repairing, renaming, and enchanting items in the game