Magma

Magma J-WK250 Professional Japanese Backsaw Blade

4.7 (453 reviews)

The Magma J-WK250 Japanese backsaw blade delivers razor-sharp pull cuts through soft and hard wood with minimal effort.

$48.35*
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*Price sourced from Amazon.com. Last updated:Jul 14, 2026.Price and availability are subject to change.

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Overview

The Magma J-WK250 Professional Japanese Backsaw Blade draws on centuries of Japanese saw-making tradition to offer woodworkers a precision cutting tool that outperforms many conventional Western saws in finesse and efficiency. Built from high-quality steel, the blade is thinner and harder than typical push-saw blades, resulting in a narrower kerf that wastes less material and demands less physical effort from the user. The pull-stroke cutting action keeps the blade under tension, allowing for straighter, more controlled cuts with cleaner results.

Versatility is built into the tooth design: trapezoid teeth handle cross-section cuts while triangular teeth manage longitudinal rip cuts, covering the two most common woodworking scenarios with a single blade. The exceptionally long handle provides balanced leverage and a comfortable grip, reducing hand fatigue during prolonged use. Whether you are making joinery cuts in hardwood or trimming softwood stock, the J-WK250 delivers smooth, tear-free surfaces that often require minimal finishing work.

Key Features

Blade Length: 250 mm thickness: 0.5 mm distance between gears: 1,36 mm

Saw No back. For Volume Reducer, deep cuts,

Part, flexible also perfectly suited for working in hard-to-reach areas

Specifications

Brand
Magma
Model
J-WK250
Type
Japanese Backsaw Blade
Blade Material
High-Quality Steel
Handle Style
Exceptionally Long Handle for Balanced Cutting
Tooth Types
Trapezoid (cross sections), Triangular (longitudinal cuts)
Intended Use
Soft and Hard Wood
Key Features
Razor-Sharp Teeth, Minimal Cut Loss, Smooth Cutting Surfaces

Pros & Cons

👍 Pros

  • Thin, hard blade produces a narrow kerf with minimal material waste
  • Pull-cut design requires less force and provides excellent control
  • Dual tooth geometry handles both cross-cutting and rip-cutting tasks
  • Long handle improves balance and reduces hand fatigue during use
  • Razor-sharp teeth deliver smooth, tear-free surfaces that often need little sanding

👎 Cons

  • Thin blade can be more fragile than thicker Western-style saw blades if twisted or flexed sideways
  • Pull-stroke cutting technique may require an adjustment period for users accustomed to push saws
  • Blade is specialized for wood and not suitable for cutting metals or plastics

Frequently Asked Questions

The blade features two tooth types — trapezoid teeth for cross-section cuts and triangular teeth for longitudinal cuts — making it versatile across common woodworking tasks.
The J-WK250 cuts on the pull stroke, which keeps the thin blade in tension rather than compression. This allows for a thinner kerf, less material resistance, and smoother cuts with less physical force.
It is designed for cutting both soft and hard woods, delivering clean, tear-free results in either material.
The J-WK250 features an exceptionally long handle that distributes grip pressure evenly, improving balance and control during extended cutting sessions.
This is a backsaw blade. The product title and description indicate it is a blade unit, so verify compatibility with your handle system before purchasing.