Hawaiian Koa 2A+ Curly Tenor Ukulele Back & Side 4-Piece Set #KOA-TR-BS-018
■ Product Description
Hawaiian Koa 2A+ Curly
Tenor Ukulele Back & Side 4-Piece Set
Item Number: KOA-TR-BS-018
This set features 2A+ (Lower-Mid Grade) Curly Hawaiian Koa, selected for Tenor Ukulele construction.
The wood features the distinctive golden-to-brown natural coloration of Hawaiian Koa, combined with attractive natural curly figure that gives each piece its own unique character.
The set includes two bookmatched Back pieces and two Side pieces for a complete 4-piece Tenor Ukulele Back & Side set. Its natural figure and rich coloration make it an excellent choice for custom Tenor Ukulele construction.
The wood is sourced directly from suppliers on Hawaii Island and supplied as part of an ongoing reforestation project.
■ Grade
2A+ (Lower-Mid Grade) Curly
■ Scientific Name
Acacia koa
■ Set Contents
-
2 Back pieces (Bookmatched)
-
2 Side pieces
Total: 4 Pieces
■ Size
Bookmatched Back
Approx. 340 × 265 (Lower) / 220 (Upper) × 3.0 mm
Side
Approx. 510 × 90 × 2.9 mm
(Length × Width × Thickness)
The Back dimensions are measured with the bookmatched pieces opened and laid flat. These are not the dimensions of a single piece.
The Back width varies from approximately 265 mm at the lower section to 220 mm at the upper section. Please confirm that the available dimensions are suitable for your instrument design before purchasing.
■ Wood Information
Species: Hawaiian Koa
Scientific Name: Acacia koa
Origin: Hawaii Island, State of Hawaii, USA
■ Features
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2A+ (Lower-Mid Grade) Curly Hawaiian Koa
-
Complete 4-piece Back & Side set for Tenor Ukulele construction
-
Bookmatched Back
-
Beautiful natural golden-to-brown coloration
-
Attractive natural curly figure
-
Excellent choice for custom Tenor Ukulele construction
-
Directly sourced from Hawaii Island
-
Supplied as part of a reforestation project
■ Recommended Uses
-
Tenor Ukulele construction
-
Custom ukulele building
-
Ukulele Back
-
Ukulele Sides
-
Acoustic instrument making
A versatile 2A+ Curly Hawaiian Koa 4-piece Back & Side set for Tenor Ukulele construction, featuring attractive natural figure and the distinctive golden-to-brown coloration of genuine Hawaii Island Koa.
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-TR-BS-018
