End Effect in Kiln-Drying

The end effect in red oak (Quercus rubra) 4/4 boards was studied by looking at moisture gradients as the boards dried. Gradients were steep initially, but as the final MC was attained, they flattened out, although the magnitude was large enough to potentially cause problems in subsequent manufacture. An equalizing treatment is necessary to eliminate the moisture gradient caused by the end effect.

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