Skip to main content

Grindstone Book Duplication

The single biggest oversight in the entire modpack.

What it does​

Put any enchanted item in the grindstone with the Grind Enchantments mod recipe. You get a book containing that enchant, AND you keep the original enchanted item.

Normal grindstone behavior destroys the enchantment. This config disables that.

The proof​

File: config/grindenchantments.json

"disenchant_to_book": {
  "enabled": true,
  "consume_enchanted_item": false
}

That false is the bug. It should be true (vanilla behavior). The dev forgot to set it.

How to exploit​

  1. Get one Mending book (librarian villager → trade)
  2. Apply Mending to a cheap pickaxe
  3. Put pickaxe + book in grindstone (Grind Enchantments recipe)
  4. Get a new Mending book AND keep the pickaxe
  5. Repeat infinitely

Same works for:

  • Sharpness V
  • Protection IV
  • Unbreaking III
  • Any rare enchant from villager trades

Power scaling​

Combined with villager trading hall + TradingPost-v8.0.2:

  • Cycle librarians for rare books (Mending, Sharp V, Prot IV, Fortune III)
  • Buy ONE of each
  • Dupe each one infinitely via grindstone
  • Outfit unlimited armor/weapons with god enchants for the cost of 5-6 emerald trades

Risk​

This is technically a bug. If the modpack ever updates grindenchantments.json to set consume_enchanted_item: true, the loophole closes. Stockpile while it's open.