Comparison of Methods for Preparation of Moisture Content Gradient Sections
Keywords:
Moisture content gradients, moisture sections, metal saws, slicing, Douglas-fir, tanoakAbstract
A comparison is made of the effect of sawing and slicing on the moisture content of wood sections used to assess moisture content gradients in lumber. Thin, small-diameter (0.020 inch x 2.75 inch and 0.031 inch x 4.00 inch) (0.508 mm x 6.98 cm and 0.794 x 10.2 cm), commercially available metal slitting saws and a modified commerical horizontal wood slicer were used to cut sections ranging in nominal thickness from 1/32 inch (0.79 mm) to 7/32 inch (5.56 mm) from air-dry Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) and tanoak (Lithocarpus densiflorus (Hook. & Arn.) Rehd.). In both species, moisture content loss in cut sections increased with decreasing section thickness for both slicing and sawing. Above 3/32 inch (2.38 mm) section thickness, the larger diameter saw produced moisture content losses that were less than or equal to losses in sliced sections.References
Pfaff, F. 1978. Moisture content testing of kiln-dried spruce-pine fir. Can. For. Ind. 98(10):37-45.n
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