Riftsawn lumber is much more stable than plainsawn lumber. Each board is cut perpendicular to the log's rings, so each board has essentially the same grain pattern. Furniture made of riftsawn wood has more of a uniform appearance because of the similarity of grain patterns in the boards. Rift-sawing provides very poor yield, however, leaving lots of wedge-shaped scraps. Its low yield is why riftsawn wood is rarely produced by lumber yards, which typically makes it more expensive than quartersawn or plainsawn wood.