Calculator
Anvil Cost Calculator
Every trip through the anvil stamps an item with a prior work penalty that doubles: 1 level, then 3, 7, 15, 31. Add that to the enchantment cost and a rename, and gear becomes unrepairable long before you expect it. This calculator shows the total for any combination and flags the point where a survival anvil refuses the job.
Calculator
Anvil Cost Calculator
Prior work penalty1 lv
Total cost7 lv
Output prior uses2
A survival anvil refuses anything from 40 levels up. Each trip through the anvil doubles an item’s penalty — 0→0, 1→1, 2→3, 3→7, 4→15, 5→31, 6→63 — so combine books together first and put the expensive item through as few times as you can.