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Defect Reduction in Low-Value White Oak Lumber Using Restrained Drying
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Description:

Increasing emphasis is being placed on alternative processing methods for lowvalue

hardwoods. Extensive research has shown that drying softwood lumber using edge-wise

restraint improves product and value yields. Currently, the effects of restraint drying on

product and value yields from low-grade hardwood lumber have not been investigated. We

evaluated the use of a modified restraint drying system on its potential to reduce bow, crook,

twist, cup, and surface defects in low-grade white oak (Quercus alba) lumber. We found

that the amount of crook was significantly lower in boards that were dried using pneumatic

restraint versus those dried with top-loading only. These results suggest that restraint drying

could help secondary processors increase yields and overall returns on low-grade lumber.

File Size:
269.6 KB
Downloads:
193
File Author:
Shawn T. Grushecky, Oluwatosin Adedipe, Charlie Collins II, Brian Cox, Colin Dougherty, and James P.
Submitted On:
18 Mar 2008
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