Hawaiian Koa 4A+–5A Curly Wood 2-Piece Set #KOA-928 / KOA-929
■ Product Description
Hawaiian Koa 4A+–5A Curly
Rare High-Grade Hawaiian Koa 2-Piece Wood Set
Item Numbers: KOA-928 / KOA-929
This rare 2-piece set combines one 5A (High Grade) and one 4A+ (High-Mid Grade) piece of Curly Hawaiian Koa.
Both pieces feature the distinctive golden-to-brown natural coloration of Hawaiian Koa, enhanced by beautiful three-dimensional curly figure that changes in depth and appearance with the viewing angle and light.
KOA-928 measures approximately 540 mm long, while KOA-929 measures approximately 458 mm long. Both pieces are approximately 50 mm wide and 20 mm or more in thickness, providing excellent flexibility for custom cutting and processing.
These high-grade figured pieces are ideal for musical instrument components, handles, accessories, small custom items, fine woodworking, and craft projects where the natural beauty of Curly Hawaiian Koa can be highlighted.
The wood is sourced directly from suppliers on Hawaii Island and supplied as part of an ongoing reforestation project.
■ Grade
KOA-928: 5A (High Grade) Curly
KOA-929: 4A+ (High-Mid Grade) Curly
■ Scientific Name
Acacia koa
■ Set Contents
Hawaiian Koa 2-Piece Wood Set
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KOA-928 × 1 piece
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KOA-929 × 1 piece
■ Size
KOA-928
Approx. 540 × 50–57 × 20 mm
(Length × Width × Thickness)
KOA-929
Approx. 458 × 50 × 21 mm
(Length × Width × Thickness)
■ Moisture Content
KOA-928: Approx. 13%
KOA-929: Approx. 11%
■ Wood Information
Species: Hawaiian Koa
Scientific Name: Acacia koa
Origin: Hawaii Island, State of Hawaii, USA
Sold As: 2-Piece Set
■ Features
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High-grade 4A+–5A Curly Hawaiian Koa
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Rare 2-piece set with two individually figured pieces
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KOA-928: 5A (High Grade)
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KOA-929: 4A+ (High-Mid Grade)
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Beautiful three-dimensional curly figure that changes with the viewing angle and light
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Rich natural golden-to-brown coloration
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Flexible dimensions for custom cutting and processing
-
Suitable for musical instrument making, fine woodworking, and specialty craft projects
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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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Musical instrument components
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Ukulele and guitar components
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Knife handles
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Tool handles
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Pen and turning projects
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Accessories and jewelry
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Inlays
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Small custom wooden items
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Fine woodworking and craft projects
A rare 2-piece high-grade Curly Hawaiian Koa set, combining beautiful 5A and 4A+ figure and offering two distinctive pieces for custom instrument making, fine woodworking, and specialty projects.
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-928-929
