I’ve mapped one out on paper first, 5 by 5 tiles, walls 4 thick, a single entrance on the north side, and a 3‑tile wide kitchen area that’s just wide enough to run a single line of food processors. All output runs into a central storage so you never have to backtrack. If you want to add a little spice counter, just put it at the southern corner—keeps the flow straight and the waste chute out of the main line. It’s all about keeping the heat and the ammo in separate rooms and never letting a gate slip open.