1.12 Duping glitch (peyton pls dont fix it its great and so helpful for hardcore players who like to bulid large stuff)
if u dont know by this point there is a 1.12 duping glitch to dup stuff, its super easy and simple and u shouldn't rlly abuse it or your game will be just boring, anyways to do it u will place a piston facing straight as u see in the picture, an item frame on the back of piston, and a button next to it, now for the repeaters and note block, u don't have to do these, these are just there for u to know when to break the item frame, so u place your item on the item frame that u want to dupe then u click the button, the moment u like hear the note block or when the piston is gonna come back u are gonna break the item frame, no not click on it to get the item from it u are gonna break the entire item frame, will take more than one try, u could use shulker boxes and dupe them, rlly cool if u wanna build like a giant beacon with diamond blocks or something but yea
NOTE: I suggest you turn on hitboxes (f3 + b) to know were the item frame edge is and hit it more accurate
Another NOTE lol: make sure repeaters are on full tick