Katalox: Deep Purple-Brown Hardwood with Extreme Density and Premium Turning Performance

Katalox, scientifically known as Swartzia cubensis, is a dense tropical hardwood native to Mexico, Central America, and parts of the Caribbean. Often marketed as “Mexican Ebony” due to its dark color and high density, Katalox is prized for its deep purple-brown tones, exceptional hardness, and ability to take a glass-like finish.

For woodturners seeking a bold, high-contrast hardwood with outstanding durability, Katalox is an excellent and dramatic choice.

---

Species Information

• Scientific name: Swartzia cubensis
• Common names: Katalox, Mexican Royal Ebony, Mexican Ebony
• Native region: Mexico, Belize, Guatemala, Central America
• Family: Fabaceae (Legume family)
• Janka hardness: Approximately 3,660 lbf

Katalox is significantly harder than most domestic hardwoods and even harder than many true ebony species.

---

Color and Appearance

Katalox is known for its striking, dark coloration.

Color characteristics include:

• Deep purple-brown heartwood
• Nearly black appearance in some pieces
• Subtle violet undertones
• Occasional lighter sapwood contrast
• Smooth, fine texture

Freshly cut Katalox may show a richer purple tone that darkens over time into a deep brown or near-black shade.

Its bold color gives finished pieces a luxurious, high-end appearance.

---

Grain Structure and Texture

Katalox typically has a straight to slightly interlocked grain with a very fine, tight texture.

Grain characteristics include:

• Extremely fine grain
• Minimal visible pores
• Smooth, uniform surface
• Moderate natural luster

The fine grain allows for precise detailing and a flawless finish.

---

Turning Characteristics

Katalox turns exceptionally well but requires sharp tools and careful technique due to its extreme hardness.

Turning performance highlights:

• Extremely clean, crisp cuts
• Outstanding detail retention
• Dense and heavy on the lathe
• Slightly abrasive on tools
• Smooth finishing cuts with proper technique

Because of its density, lighter cuts and slower speeds are recommended.

It is especially well suited for small to medium-sized turning projects where fine detail is important.

---

Stability and Durability

Katalox is highly stable and extremely durable when properly dried.

Performance characteristics include:

• Very high density
• Excellent wear resistance
• Strong dimensional stability
• Long-lasting finished pieces

Its durability makes it ideal for heirloom-quality and high-use items.

---

Ideal Uses for Woodturning

Katalox is popular for precision and decorative turning projects.

Common uses include:

• Pens
• Bottle stoppers
• Tool handles
• Finials
• Small bowls
• Boxes
• Accent components in segmented turning

Its dark color makes it ideal for contrast in multi-wood designs.

---

Sanding and Finishing

Katalox sands very well and can achieve a mirror-like finish.

Recommended sanding progression:

• Start at 220 grit
• Progress through 320, 400, and 600 grit
• Continue to 800–1000 grit or higher for maximum polish

Finishing options include:

Oil finishes

• Enhance depth and richness

CA glue finish

• Produces a high-gloss, durable surface

Wax polish

• Creates a deep, natural shine

Due to its density and fine grain, Katalox can achieve an exceptional polish with minimal finishing.

---

Density and Workability

Katalox is extremely heavy and dense.

Performance highlights:

• Extremely hard and durable
• Excellent for fine detail
• Produces high-end finished feel
• Long-lasting performance

Its weight and density give finished pieces a solid, premium quality.

---

Why Woodturners Choose Katalox

Katalox (Swartzia cubensis) offers woodturners exceptional density, striking dark color, and premium finishing capability. Its deep purple-brown tones and fine grain make it ideal for statement pieces and heirloom-quality projects.

For woodturners seeking a bold, durable hardwood with dramatic visual impact and superior performance, Katalox is an outstanding and rewarding choice.