Quartersawn wood
Most quality guitar woods are obtained from quartersawn lumber. What does that mean?
The following illustration of a cross section of a log attempts to give a crude idea of several types of cuts and their affect on grain.
The optimum cut for tight, evenly spaced grain is rift sawn wood. Each board is essentially cut radially from the center. All the boards should have similar grain patterns. However, it is difficult to cut and very wasteful. Not shown in the illustration are the number pieces that end up as wedges or useless scraps.
Quarter sawn lumber is the compromise cut used by most for quality woods. It is less wasteful while still producing good grain. The Top Left illustration is again highly simplified. In reality there would probably be section within the quarter shown where the cuts are made at 90 degrees and at 180 degrees. There is still waste.
http://danlovesguitars.com/2011/02/tradi...c-guitars/
Rift sawn เกรนตรงกว่าครับ แต่เปลือง ผมไม่รู้หรอกครับว่าคนเลื่อยเขาเลื่อยแบบใด
เพียงแต่ว่า Quarter sawn มันเสียเศษน้อยกว่าครับ ไม้ส่วนที่ไม่สามารถนำมาทำกีต้าร์ เอาไปทำเฟอร์นิเจอร์ได้ครับ
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