Aprelflooring.com

Plainsawn
Plainsawn is the most common cut. The board contains more variation than the other two cuts because grain patterns resulting from the growth rings are more obvious.

Quartersawn
Quartersawing produces less board feet per log than plainsawing and is therefore more expensive. Quartersawn wood twists and cups less and wears more evenly.

Riftsawn
Riftsawn is similar to quartersawing, but the cut is made at a slightly different angle.