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Rift sawing is a woodworking process that aims to produce lumber that is less vulnerable to distortion than flat-sawn lumber. Rift-sawing may be done strictly along a log's radials—perpendicular to the annular growth ring orientation or wood grain —or as part of the quarter sawing process.
Flat-sawn wood is less stable than quarter sawn or rift sawn wood, but can be produced more quickly and at lower cost. [ 5 ] The face of the board may show curved grain, sometimes with intricate patterns.
This can be done in three ways: plain-sawing (most common, also known as flat-sawn, bastard-sawn, through and through, and tangent-sawn), quarter-sawing (less common), or rift sawing (rare). In flat sawing , the log is passed through the blade cutting off plank after plank without changing the orientation of the blade or log.
The way a given piece of wood has been sawn affects both its appearance and physical properties: flat-grain: flat-sawn, slab-sawn, plain sawn, bastard-sawn, [6] or sawn "through and through". edge grain: quarter-sawn or rift-sawn or straight-grained, and; end grain: the grain of wood seen when it is cut across the growth rings.
Rip cuts are commonly made with a table saw, but other types of power saws can also be used, including a radial arm saw, band saw, and hand held circular saw.In sawmills the head saw is the first rip-saw a log goes through, which is sometimes a gang-saw, and then the cants may be resawn using other saws and then edged in an edger and sometimes cut to length by a crosscut saw.
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Plain sawn (flat sawn, through and through, bastard sawn) – A log sawn through without adjusting the position of the log and the grain runs across the width of the boards. Quarter sawn and rift sawn – These terms have been confused in history but generally mean lumber sawn so the annual rings are reasonably perpendicular to the sides (not ...
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