Press Drying Quartersawn Hard Maple Lumber

This note describes application of a press drying process to quartersawn hard maple. The success of the process depends on the ability of the compression of the press to counteract and suppress internal drying tension that causes honeycomb. Press drying was at 350?F platen temperature and at 75 to 125 psi platen pressure. Sapwood dried with only a small amount of honeycomb. Heartwood, however, developed severe honeycomb, ring failure, collapse, and surface cracks during press drying.

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