Making a loom in Terraria is fairly easy: 1. Collect 10 pieces of wood. 2. Make two lead or iron bars with lead or iron ore and an anvil. 3. Craft chains with an iron or lead bar. 4. Construct a sawmill with 10 pieces of wood, two lead or iron bars, and one chain. 5. Use the sawmill to make your loom with 12 pieces of wood.