Place an item frame on a block and put your item inside. Position a piston to extend into the space the item frame occupies. The Process:

: Slower computers or high lag can cause the item to "exist" in both hoppers when the chunk reloads. Nether Portal Minecarts

The Minecraft 1.7.10 dupe glitch works by manipulating the game's inventory system to create duplicate items. The process involves the following steps:

: This exploit relies on how the game saves and loads data across different "chunks." : Locate a chunk boundary (using F3+G or similar tools).

Re-open the "book chest" and shift the books around to cause an , which prevents the chunk from saving.

When you restart, the items will be in your (from the pickup), but also still on the ground (from the previous save). 2. Nether Portal Hopper Lag

: Timing an explosion to destroy a storage minecart just as it transitions between dimensions can occasionally cause it to drop its contents while a copy persists in the destination.