The Janka Hardness Scale: Why Wood Hardness Matters

Wood selection is not only about color. Density, grain, and hardness all influence how a board feels under a knife and how it responds to years of use.

The Janka scale measures the force needed to embed a small steel ball halfway into wood. It is a useful comparison, not the only measure of a good cutting surface.

The woods in this shop

• Hard maple: 1,450 lbf. Pale, tight-grained, and exceptionally durable.
• Black walnut: 1,010 lbf. Rich chocolate color with pronounced grain and a softer feel under a knife.
• Hard cherry: 950 lbf. Warm reddish-brown color that deepens beautifully with age and light.

Hardness is not the whole story

A cutting board needs more than a high number. It needs stable lumber, sound joinery, and a finish that keeps the wood conditioned. Grain direction matters too, especially in a board made to handle daily knife work.

The right wood is the one that balances how you cook, how you want the board to look, and the way you plan to use it over time.