Hawaiian Koa 4A+ Curly Wood – Suitable for Tenor & Concert Ukulele Tops #KOA-970
■ Product Description
Hawaiian Koa 4A+ Curly
Suitable for Tenor & Concert Ukulele Top Material
Item Number: KOA-970
This is a rare 4A+ (High-Mid Grade) Curly Hawaiian Koa piece featuring the distinctive golden-to-brown natural coloration and beautiful three-dimensional curly figure characteristic of high-grade Hawaiian Koa.
The natural curly figure changes with the viewing angle and light, revealing impressive depth, movement, and natural character across the surface of the wood.
Measuring approximately 43 mm thick, 400 mm long, and 140–190 mm wide, this substantial piece can be resawn and processed into Top material for both Tenor and Concert Ukuleles.
Its generous thickness and width also provide excellent flexibility for custom cutting and processing, making it suitable for other musical instrument components, fine woodworking, and a variety of specialty craft projects.
The wood is sourced directly from suppliers on Hawaii Island and supplied as part of an ongoing reforestation project.
■ Grade
4A+ (High-Mid Grade) Curly
■ Scientific Name
Acacia koa
■ Size
Approx. 400 × 140–190 × 43 mm
(Length × Width × Thickness)
■ Wood Information
Species: Hawaiian Koa
Scientific Name: Acacia koa
Origin: Hawaii Island, State of Hawaii, USA
■ Suitable for Tenor & Concert Ukulele Top Material
This piece has sufficient dimensions to be resawn and processed into Top material for both Tenor and Concert Ukuleles.
The actual number of usable pieces and final dimensions will depend on the saw kerf, cutting orientation, desired finished thickness, and individual instrument design.
Please confirm the required dimensions for your intended ukulele design before cutting.
■ Features
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Rare 4A+ (High-Mid Grade) Curly Hawaiian Koa
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Suitable for resawing into Tenor & Concert Ukulele Top material
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Substantial 43 mm thickness
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Generous 140–190 mm width
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Rich natural golden-to-brown coloration
-
Beautiful three-dimensional curly figure
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Excellent flexibility for custom cutting and processing
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Directly sourced from Hawaii Island
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Supplied as part of a reforestation project
■ Recommended Uses
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Tenor Ukulele Top material
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Concert Ukulele Top material
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Ukulele construction
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Custom instrument making
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Musical instrument components
-
Fine woodworking and craft projects
A rare 4A+ Curly Hawaiian Koa piece with substantial dimensions and beautiful three-dimensional figure, offering excellent potential for resawing into Tenor and Concert Ukulele Top material as well as other high-quality custom woodworking applications.
KOA
What Is Hawaiian Koa?
Why Is Everyone So Fascinated by Koa?
What Is Koa?
Hawaiian Koa (Acacia koa) is a remarkable wood that has been treasured by the people of Hawaii for centuries.
Traditionally used for outrigger canoes, paddles, boxes, and furniture, Koa is now highly valued worldwide as a premium tonewood for ukuleles and guitars.
It is known for its rich, warm tonal character and distinctive natural beauty.
The Rarity of Hawaiian Koa
Hawaiian Koa is a tree species native to Hawaii, with a naturally limited geographic range and a finite supply of harvestable timber.
Historical logging and changes in land use have affected Koa forests. High-quality lumber displaying exceptional curly figure is particularly rare and highly sought after.
Today, forest conservation and reforestation initiatives are helping support the future of this valuable Hawaiian resource.
Our Koa Grading System
Our grading system is based on decades of experience in the wood industry. We evaluate Hawaiian Koa primarily by the strength, depth, and visibility of its curly figure, providing a consistent reference to help customers compare and select lumber.
Little or no curl,
with subtle figuring
Moderate curl
visible at certain angles
Prominent curl
visible from most angles
Deep, strong,
highly defined curl
Exceptionally rare,
outstanding curly figure
Note: These grades are based on our own grading standards. As Koa is a natural material, color, grain patterns, and the appearance of curl may vary depending on the individual piece and lighting conditions.
Moisture Content & Drying
Some of our lumber comes from naturally fallen trees or logs that have been drying for extended periods after harvesting. Moisture content varies from piece to piece. Some lumber may be ready for processing, while other pieces may require additional drying or acclimatization.
Careful drying and gradual moisture adjustment help minimize the risk of checking, cracking, and warping.
Stack Properly
Use stickers between boards to allow air to circulate freely.
Ensure Ventilation
Avoid direct sunlight and sudden changes in temperature or humidity.
Circulate Air
Use fans when necessary to maintain gentle and consistent airflow.
Minimize Warping
Stack lumber carefully and use appropriate weights when needed.
Recommended Uses
With its beautiful grain and excellent versatility, Hawaiian Koa is suitable for a wide range of applications, from fine musical instruments to decorative woodworking and handcrafted accessories.
Ukulele & Guitar Making
Knife & Tool Handles
Pens, Small Crafts & Inlays
Boxes & Fine Woodworking
Dimensions & Tolerances
Because wood is a natural material, actual dimensions may vary slightly. The following measurement tolerances may apply depending on the product.
| Thickness | ±0.2 mm |
|---|---|
| Length | ±5 cm |
| Width | ±3 mm |
Natural lumber may not be perfectly square or uniformly shaped. Please allow for the natural characteristics of wood. Dimensions and conditions specified on individual product pages take precedence.
Detailed information
Tree species: ハワイアンコア
Thickness:
Length:
Width:
Backing:
Number of leaves:
Made to order: KOA-970
