Abstract
Computer simulation sawing programs were used to study the sawing of mathematical models of hardwood logs by me live sawing and three 4-sided sawing methods. One of the 4-sided methods simulated "grade sawing" by sawing each successive board from the log face with the highest potential grade. Logs from 10 through 28 inches in diameter were sawn. In addition, a refinement in the live sawing called live rip, in which center-sawn boards are ripped to increase value, was studied. Results generally indicate that all of the 4-sided methods studied gave similar lumber values. Live sawing was better than the 4-sided methods with good logs but inferior for 10-and 12-inch logs with large detective cores. Live sawing followed by ripping produced the highest lumber values in almost all cases.
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