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Forest Products Laboratory
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Madison, WI 53726-2398
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Source: FPL-RN-0193, May 1963. p.10; 1963

Author(s): McMILLEN, J.M.

Publication Year: 1963  View PDF »

Category: Research Notes

Abstract: Hard maple lumber producers have difficulty in consistently kiln drying the wood to a light natural color. To obtain the very whitest color specified for some products, they believe it is necessary to start with winter-cut, air-dried material. This experiment showed that either white or discolored lumber could be produced during the kiln drying of air-dried or summer-cut green 5/4 hard maple by adjusting kiln conditions. A low-temperature, moderate relative humidity kiln schedule produced the white stock. Various operational malfunctions that cause unwanted high humidity conditions are discussed, as are precautions in the use of the moderate humidity schedule.

Keywords: pinkish-brown discoloration

File size: 1,757 kb(s)

Date posted: 07/15/2010

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