Hi guys I found out a cool Duplication Glitch for Minecraft 1.6.2!
Here is what you do:
1. In your inventory have the following: 1 Rail, 1 TNT, 1 Redstone Torch, 1 Minecart With chest, ANY ITEM YOU WANT DUPLICATED!
2. Set down Cart with chest on rail.
3. Set down TNT next to cart.
4. Place any item to be duplicated in cart with chest.
5. (THIS IS THE TRICKY PART!!) Set redstone torch next to TNT, and open chest with item. A split second as the TNT explodes have your cursor over the item and press any number to have that item to be sent to your Inventory just as the explosion takes place. (An empty slot in your inventory is best.)
6. PROFIT!!!

Let me know what you think! This does work as I've done it just done it. Please Leave a Diamond, Favorite, And subscribe if you liked this simple Tutorial!