Kiln-Drying Hardwood Dimension Parts.
FOREST PRODUCTS LAB MADISON WI
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The level of mill rejects of furniture cuttings dried noted in this investigation is obviously too high to be tolerable. Crook in the long cuttings and cup in the wide cuttings were the major reasons for rejection. Other shorter and narrower cuttings had a much lower rejection rate--one that probably could be tolerated. Although some end checking occurred, and there was some evidence that end coating would reduce this occurrence, end checking caused no rejections. Other drying defects, such as honeycomb or surface checking, were practically nonexistent regardless of kiln schedule. Because kiln schedule did not significantly affect quality, the use of accelerated drying schedules for drying interior frame parts apparently is feasible. Regardless of the kiln schedule used, successful commercial drying of long or wide cuttings, or of both, from lumber cut from small, low-grade bolts will require special measures to control warp. This may also be true for similar cuttings from standard No. 2 Common lumber.
- Wood, Paper and Related Forestry Products
- Manufacturing and Industrial Engineering and Control of Production Systems