A duplicating glitch that is easy to make and use. Dose not take away achievements.oi

All you need is a chest stick piston and a button. Put an item you want in the chest press the button and then as the chest goes up open it take the item before it goes back down. Once it goes back down the item is in your inventory and the same thing is still in the chest. Works in survival mode and realms. Also can get achievements too.