With the Norwood PortaMill™, your chainsaw and your ladder, you'll start making accurate, smooth dimensional lumber, from 2 x 4s to 6 x 6s. Handles green logs up to 14in. dia. and as long as your ladder permits; mills boards up to 8in. wide. Your chainsaw is the saw head, and you set the cutting depth, engage the throttle and push the saw through the cut.