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Black Walnut

Juglans nigra

Black Walnut is a chocolate to light-brown hardwood with varied figure, commonly used for fine furniture, cabinetry, gunstocks, and turnings.

Janka

1010

Price Tier

$$$

Dent Risk

Low
Workability
Finishing
Uses
Buying
American black walnut lumber surface showing dark brown straight grain

Overview

Black walnut is the only dark brown hardwood native to North America. Its heartwood runs from light brown to deep chocolate and provides a natural luster under simple oil finishes. Unlike oak or ash, it doesn’t have a deep, aggressive grain, so it stays smooth to the touch without needing a thick layer of film. Keeping the finish thin avoids a “plastic” look and lets the wood’s natural texture show through.

Key takeaways

  • Use sharp tools to avoid tearout;
  • Acclimate before final milling;
  • Use a seal coat under film finishes.

At a Glance

Hardness & Heft

Janka: 1010 lbf
Dry weight: 42 lbs/ft³ (673 kg/m³)

Color & Figure

Color: Light Brown to Deep Chocolate

Grain: Straight to irregular

Figure: Curly possible

Stability & Movement

Movement: Medium

Drying: Moves moderately in service; acclimate it

Workability

Plays nice with

  • Glue-ups
  • Routes nicey
  • Handtool friendly

Fights you on

  • Gummy sanding
  • Chip-out on routing
  • Checking if rushed

Finishing

  • Surface Prep: 120 to 180 to 220
  • Blotch Risk: Low
  • Pores: Semi-ring-porous

Best Uses

Great for

  • Fine furniture
  • Casework
  • Carvings

Avoid for

  • Outdoor exposure
  • Bright stains
  • Budget builds

Where it comes from

Midwest USA

Native range map of black walnut and several other North American hardwoods showing distribution in the eastern and midwestern United States

Buying notes

Inspect ends closely for early checks.
  • Sold As: Lumber and veneer
  • Look For: Straight grain, even color, minimal checks

What to Watch Out For

  • Case-hardening
  • Internal checks
  • Excessive sapwood

Practical Alternatives

  • English Walnut
  • Claro Walnut
  • Sapele

Shop Notes / Deeper Dive

Black Walnut is the undisputed king of the American workshop, but it’s a “mover,” so don’t skimp on the floating panel design. It turns like a dream and finishes beautifully with almost anything you throw at it. If you’re matching boards, sort them under the same light before you mill—color variation is part of the charm, but a surprise mismatch can ruin a tabletop.

Like what you see?

While I occasionally work with some of these species, availability varies widely. If you’re researching woods for a custom project, feel free to reach out.

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Reference Notes:  Wood grain and color can vary significantly within a species depending on growing conditions, age, and cut orientation. Images on this page are provided as general reference examples and may not represent every possible variation of the species. Geographic distribution maps illustrate typical native or commonly cultivated ranges and may not reflect every region where the species occurs today.

Additional technical data and botanical information may be referenced from sources such as the USDA Forest Products Laboratory Wood Handbook.