Logs vs. Bolts: Effect of Length on Dimension Stock Yield

To determine whether the live sawing of bolts, of length equal or multiple to the length of the clear cuttings required, offered any advantage over the live sawing of 12- foot logs, the unedged boards from 10 straight, F-3, live sawn hard maple logs (Acer saccharum Marsh.) were crosscut through simulation into three 4-foot segments or two 6-foot segments. The dimension stock yield was obtained for all three alternatives by computer simulation using a cutting bill which had five choices for length (12 to 36 inches in 6-inch increments). The value yield from 12-foot logs was 7 percent higher than that from the three 4-foot bolts, and 3 percent higher than that from the two 6-foot bolts. The higher yield from the long logs was attributed to the fact that the additonal crosscutting required to produce the short bolts eliminated some potential long cuttings.

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