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Unread 04-02-2002, 05:16 PM   #3
"da Leveler"
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Join Date: Apr 2001
Posts: 18,280
Oriented Strand Board (OSB) and waferboard are engineered, mat-formed panel products made of strands, flakes or wafers sliced from small diameter, round wood logs and bonded with an exterior-type binder under heat and pressure.

Strand dimensions are predetermined and have a uniform thickness. The majority of Structural Board Association (SBA) member mills use a combination of strands up to 6" (150mm) long and 1" (25mm) wide.

OSB panels consist of layered mats. Exterior or surface layers consist of strands aligned in the long panel direction; inner-layers consist of cross- or randomly-aligned strands. These large mats are then subjected to intense heat and pressure to become a "master" panel, then cut to size.
Jim Buckley

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