To be honest, it wasn't just a desire for neatness :blush: Having painted myself into a corner with feasible belt paths on the Z-axis I came up with the idler-with-the-cable-through-the centre idea. Problem was, the cooling pipes tended to have a bit more friction through the bushing than I was comfy with - the cable braid is a lot more slippy and makes everything move a lot more freely .