An anvil has three tiers of visual degradation (intact → chipped → damaged) and breaks completely after approximately 25 uses. Even chipped and damaged anvils function at full capacity until the final break, so never discard one prematurely. The repair mechanic via iron ingots in the anvil UI can restore a damaged anvil to pristine condition, extending its lifespan significantly.

The Anvil recipe looks like an inverted metal T or a small archway. A common mistake is crafting all 31 ingots into Iron Blocks (giving you 3 blocks + 4 leftover ingots crafted into a partial 4th block). You must intentionally stop at 3 blocks and keep exactly 4 ingots uncrafted. If you accidentally make a 4th block, place it and break it — it drops all 9 ingots back.

Iron ore found at Y=-59 is embedded in deepslate, which takes significantly longer to mine through than stone. A Stone Pickaxe takes 1.5 seconds per deepslate block versus 0.75 seconds for stone. Bring at least two Stone Pickaxes — your first will break before you finish clearing a large vein. Upgrade to an Iron Pickaxe as soon as you have spare ingots (after crafting the anvil) for 0.5-second deepslate mining.

If an anvil falls from more than 1 block height, it takes damage on landing. Falling from 3+ blocks can instantly turn a pristine anvil into a chipped anvil, or a chipped one into damaged. A fall from 6+ blocks can destroy it entirely. When placing an anvil, always place it directly on a solid block. Never drop it from above. The anvil also deals massive damage to any entity it lands on — this can be used as a trap, but accidentally kills players and villagers.

Anvils have a hard XP cost cap of 39 levels. Any operation requiring 40+ levels displays "Too Expensive!" and becomes impossible. This is the single most important mechanic to understand. The XP cost of combining two items is the sum of their individual prior work penalties plus the enchantment combination cost. Each time an item is used in an anvil operation, its "prior work penalty" doubles. The sequence matters enormously. To maximize your enchantments:

Optimal enchanting order: Combine low-level books first on cheap items, then combine those results with your main gear. Never put your best gear through more than 2–3 anvil operations. Plan your full enchantment path before starting.

Renaming any item in the anvil adds +1 level to the cost of all subsequent operations on that item. Rename your final item last, after all enchantment combinations and repairs are complete. If you rename early, every future repair costs more XP.

An anvil does not lose functionality as it degrades. A "Damaged Anvil" repairs items and combines enchantments just as well as a pristine one. The only difference is that it has fewer uses remaining before breaking. When an anvil shows cracks, repair it with 1 Iron Ingot in the anvil UI — this restores it to pristine condition and resets the visual state. This costs 1 iron ingot and some XP but extends the anvil's life significantly.

Some enchantments cannot coexist on the same item. The anvil will silently drop the incompatible one if you try to combine them. Key incompatibilities: Fortune and Silk Touch (pickaxe), Infinity and Mending (bow), Depth Strider and Frost Walker (boots, in Java Edition), Sharpness and Smite (sword — mutually exclusive damage types). Always verify enchantment compatibility before committing expensive books.

Each repair operation on an item increases the cost of the next repair. Eventually the cost exceeds 39 levels and the item becomes unrepairable. This is called "repair cost inflation." To avoid it: combine a heavily damaged tool with a fresh duplicate (fresh tools have zero prior work penalty). This resets the repair cost to the base material cost. Always keep a spare unenchanted backup of critical tools for this purpose.

In some Minecraft versions, anvils can be pushed by pistons. In others, they break when pushed. In Java Edition 1.13+, anvils are immovable (pistons will not push them). In Bedrock Edition, anvils can be pushed but this behavior is inconsistent between updates. Never rely on piston-moving anvils for redstone contraptions — build your anvil station as a permanent fixture.