Heartwood is a rich dark brown to purplish-black, with the sapwood being nearly white in color. Walnut is straight grained, stiff, and has a good shock resistance. Walnut is commonly sold steamed, where the heartwood is blended with the sapwood , producing at times lighter and varying shades of brown on the boards.
How well does it work?
Works well with hand and machine tools. Walnut holds nails and screws well, and has a great finish. Walnut also paints, stains, glues, and polishes well.
Seasoning and Durability
The heartwood of walnut is very durable to decay, but the sapwood is liable to attack by the powder post beetle.
Notes on Grade
Butternut and Walnut are more lenient in grade than other North American hardwoods, thus there will be a higher waste factor when working with the lumber.