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  1. Effect of curve sawing on lumber recovery and warp of short cherry logs containing sweep

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    Author(s): Brian H. Bond; Philip Araman
    Date: 2008
    Source: In: Jacobs, Douglass F.; Michler, Charles H., eds. 2008. Proceedings, 16th Central Hardwood Forest Conference; 2008 April 8-9; West Lafayette, IN. Gen. Tech. Rep. NRS-P-24. Newtown Square, PA: U.S. Department of Agriculture, Forest Service, Northern Research Station: 105-113.
    Publication Series: Other
    Station: Northern Research Station
    PDF: View PDF  (178.39 KB)
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    Description

    It has been estimated that approximately one-third of hardwood sawlogs have a significant amount of sweep and that 7 to nearly 40 percent of the yield is lost from logs that have greater than 1 inch of sweep. While decreased yield is important, for hardwood logs the loss of lumber value is likely more significant. A method that produced lumber while accounting for log curvature (sweep) would allow greater volumes and higher value material that would also contain less warp when dried. While this technology is being utilized for softwood processing, it has not been accepted by the hardwood industry. A lumber recovery study conducted on mostly 8-foot-long grade 2 and 3 cherry logs at a mill utilizing a curve sawing gang, produced greater lumber volumes from cants that were curve sawn than from cants that were straight sawn.

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    Citation

    Bond, Brian H.; Araman, Philip. 2008. Effect of curve sawing on lumber recovery and warp of short cherry logs containing sweep. In: Jacobs, Douglass F.; Michler, Charles H., eds. 2008. Proceedings, 16th Central Hardwood Forest Conference; 2008 April 8-9; West Lafayette, IN. Gen. Tech. Rep. NRS-P-24. Newtown Square, PA: U.S. Department of Agriculture, Forest Service, Northern Research Station: 105-113.

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