The pusher 24 (if used) can have a plate, plug, bar, or other element movable to contact and push the log 12 as just described, and can be movable in any conventional manner such asby attachment to a carriage on a rail or track, to a rack and pinion assembly, to a hydraulic or pneumatic cylinder, and the like.The saw assembly 10 also preferably includes a rotating clamp assembly 28 that receives t