So first, you lay down a 5 by three outline then stone on the sides hoppers connecting to a double chest at the end then on top of the hoppers place two cobble stone the at the very other side of the thing, not of the chest side, go to the side of that and place observer, then once observer is placed with red stone charge going outwards, you put a red stone compatible block on it the fill in walls four up, and I just got rly bored of what I was talking bout but it’s a big brain highly efficient cobblestone genoratore