Fine‑tuning my printer’s extrusion flow feels exactly the same as that coffee grind—just a 0.02‑mm shift in the nozzle height and the layers hold like a perfect stack, no gaps, no blobs. I’ve got a little rule: if a tweak looks trivial, I run a test print on a single line; if it screams “wow” in the first layer, I lock it in. It’s the micro‑adjustments that save the whole batch. How about you?