Black Walnut

The Black Walnut tree grows abundantly across North America. The heartwood of the tree ranges from dark tan to a deep chocolate brown, sometimes with streaks of purple and green hues. The sapwood is a very pale yellow, and can add a nice touch of contrast with the heartwood. 
The wood has a low level of shrinkage when drying and suffers very little seasonal movement. Although not exceptionally hard, it can stand up to a fair amount of abuse. Walnut is straight-grained, allowing it to be steam-bent with stable and predictable results.

Lumber from the walnut tree isn't always cut into small boards. In some cases, large lengthwise cross-sections of the tree are sold as 'live edge' slabs. These huge boards are selected for their uninterrupted grain pattern and unique, natural shape. Live edge boards make excellent countertops, tables, shelves, and benches.