⚙️ Shear Sharpening Training: Edge Types Module

Every shear you encounter as a professional sharpener will have an edge geometry that shapes how it cuts and how it must be sharpened. Our Edge Types Module is designed to give you the foundation you need to recognize and master the four principal geometries: convex, semi-convex, beveled, and serrated.

What You’ll Learn in the Edge Types Module

This module goes beyond definitions. You’ll learn how to identify each edge type, why manufacturers use them, what cutting techniques they’re designed for, and the sharpening approach required to maintain them.

• Convex Edge — Found on most high-end Japanese shears. Designed for smooth, precision cutting. Requires flat hone sharpening to preserve the radius. Perfect for slide cutting, point cutting, and dry cutting.
• Semi-Convex Edge — A balance between convex and beveled. Durable, yet still sharp enough for salon use. Common in mid-range shears. Requires careful angle control during sharpening.
• Beveled Edge — Durable and often seen in entry-level or European shears. Excellent for blunt cutting and barber work, but less smooth than convex. Sharpening requires maintaining a clear, flat bevel.
• Serrated Edge — Features tiny teeth that grip hair. Useful for blunt cuts on coarse or wiry hair. Requires specialized maintenance and cannot be sharpened like other edges.

Why Edge Types Matter in Professional Sharpening

Each edge type produces a different cutting experience for the stylist or barber. A sharpener who doesn’t understand edge geometry can destroy a shear in one session. By mastering this module, you’ll be able to:

• Correctly identify edge types in the field
• Match your sharpening approach to the shear’s geometry
• Explain to clients how their shears are designed and what techniques they’re best suited for
• Protect the investment stylists make in high-quality shears

Sharpening Approaches Covered

The Edge Types Module doesn’t just define edges — it shows you how to maintain them:

• Flat hone sharpening for convex edges
• Angle discipline for semi-convex edges
• Maintaining a true bevel without over-polishing
• Special considerations for serrated edges

Take the Next Step

Understanding edge geometry is the starting point for any professional sharpener. The Edge Types Module is part of our complete shear sharpening training program and is essential for both beginners and advanced sharpeners.

Start the Edge Types Module →

FAQ

Which edge type is the hardest to sharpen?

Convex edges are the most delicate and require precise flat hone work. That’s why this module emphasizes technique and control.

Do barbers and stylists use different edge types?

Yes. Stylists often prefer convex for smooth, precision cuts, while barbers frequently use beveled or serrated edges for durability and grip.

Is this module for beginners or advanced sharpeners?

Both. Beginners will learn how to identify and understand edges, while advanced sharpeners will refine their ability to maintain geometry without compromise.