These massive multi-block drilling machines can be used to harvest all known materials in a very rapid fashion. To build one, you'll need to build the drillhead in a 3x3x3 layout, then the motor in a 3x3x3 fashion, touching it. The Trencher's facing is dictated by this; the motor always goes at the back. You can use this to make Trencher face any angle, including straight up!