Question: When you screw that cone into the wood, is it in so tight that you have to reverse it out or just pull it out? A drill bit gets rid if excess cuttings whereas the cone spreads the wood. How about smaller pilot blades ahead of the main blades. I wish we could see a tube of the "FECON" doing a not so punky stump. Like a Locust or even an fresh Aspen. Aspens are actually surprisingly well put together. I could never spend my dollars based on the limited view "Fecon" gives us: In this video the appears to be a hydraulic motor(smaller unit) mounted on top of a gear reducer (large bottom unit) which produces massive torque. This one is on a stump without side roots. Anyway, it is still a good idea to make a usable one for TomTom to do all you can do.