Popular Woodworking 2000-06 № 115, страница 28

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Rift-sawn boards move more ■ ■■ than quartersawn boards but less than flat-sawn boards. Lumber is rift sawn when all the growth rings meet the face of the board at angles between 30 degrees and 60 degrees. '

Flat-sawn boards are most susceptible to movement. Lumber is flat sawn when the growth rings meet the face of the board at angles less than 45 degrees.

Quartersawn boards move the least during the seasons, but there is more effort and waste in cutting them. Lumber is quartersawn when all the growth rings meet the face of the board at angles more than 45 degrees.

10 Popular Woodworking June 2000