A derivative of my circle smelters. If you use legendary modules and beacons this will spit out six belts of whatever from four belts going in. Easiest way to make that work is four belts going in of the next lower level of whatever's going out.
Example: Four red belts of iron going in, four blue belts of iron will come out. This is set up to fit within my robogrid so only substations are required.