Looking for a quick and easy way to duplicate items in Minecraft? This step-by-step guide shows you how to build a simple redstone contraption that lets you dupe bundles in just a few minutes. Follow the instructions carefully, and you’ll be able to multiply your items effortlessly!

Detailed Guide:

  1. Place a temporary block.
  2. Connect a hopper into that temporary block (sneak-click so the hopper points into the block).
  3. Break the temporary block.
  4. Place another hopper so it connects into the first hopper (forming a hopper chain).
  5. Put two pistons — one on each side of the hopper(s) as shown in the screenshots.
  6. Lay redstone dust around the pistons/hoppers following the layout shown in the images to form a looped circuit.
  7. Place a redstone comparator in the position shown and right-click it once so its front torch lights (comparator in comparison mode with the indicator on).
  8. Add one more redstone dust so the comparator output is fed back into the redstone loop as indicated.
  9. Place a lever next to the comparator (this will be your on/off control for the circuit).
  10. Prepare a full bundle (fill a bundle with the items you want to duplicate). Important: you can only dupe bundles with this method.
  11. Place the full bundle into the input hopper of the setup (the hopper that begins the chain).
  12. Flip the lever to activate the redstone circuit. The pistons will pulse according to the comparator/loop and the hopper behavior shown in the images.
  13. Watch the output hopper or the area in front of the pistons and collect any duplicated bundle/items that appear. Repeat flipping the lever if needed (follow the exact timing visible in the video screenshots if you want consistent results).
  14. Turn the lever off when finished, and remove any temporary blocks or extra redstone if you want a clean build.
  15. Notes & warnings:
    • This method only duplicates bundles, not arbitrary items.
    • Duplication glitches often depend on the game version and can be patched by Mojang — it may not work on all versions.
    • Use responsibly: item-duping is considered an exploit by many servers and communities; avoid using it where it would break server rules or ruin gameplay for others.

Screenshots:

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