Keep the edge
you paid for.
Most sharpeners will change the edge of your shear without telling you. Katana Edge sharpening preserves the original convex edge — the Japanese standard your shears were built to.
What most sharpeners won't tell you.
Convex Edge
Katana StandardThe hallmark of authentic Japanese shear craftsmanship. The blade curves outward toward the cutting line, reducing friction, allowing hair to part rather than be pushed. Cuts cleaner, stays sharper longer. This is the standard all Katana Edge shears ship with — and the standard we maintain through every sharpening.
Professional standard
Bevel Edge
The most common sharpening method in western markets. Faster and easier to produce than a convex edge, but creates more friction as the blade moves through hair. Dulls faster. If your shears have been sharpened by a non-Japanese-trained sharpener, they have likely been converted to a bevel edge — even if they shipped with a convex.
Common alternative
Can a converted edge be restored? Yes. If your shears have been converted from a convex to a bevel edge by a previous sharpener, Katana Edge can restore them to a true convex edge — returning the cutting performance and feel your shears had when new.
We maintain the original
factory edge.
Japanese shears are uniquely challenging to sharpen correctly — the convex edge geometry and the 80-degree radius of the blade's serrated micro-edge require specific technique and equipment. Most western sharpeners do not have access to either.
The Katana Edge sharpening method was developed to solve this. We faithfully maintain the original factory edge on all shears. No material is unnecessarily removed. The blade geometry is preserved. The convex profile is restored, not converted.
The result: your shears perform as they were designed to, for longer — and your investment lasts.
“30 years ago when Kyota came walking into my salon I kept it to myself what was being done. From that time on the excellence he showed, I have continued business for over 20 years as a personal choice. Every shear I've done business with has exceeded my expectations.”
Paul S.
Independent Stylist — 30 years
Ready to restore your edge?
Contact us to arrange professional sharpening. We serve salons and barbers across the United States and Canada, and offer mail-in service for professionals outside our service area.
Contact for Sharpening