What a Convex Edge Really Is

A convex edge is not flat or beveled — it’s slightly rounded.

This allows for:

• ✂️ Smoother cutting
• ✂️ Less resistance through hair
• ✂️ Higher performance for professional use

But it also requires controlled sharpening — not aggressive grinding.

Tools You’ll Need

To keep things simple and consistent:

• Flat hone or disc system
• Diamond hook & loop pads (multiple grits)
• Clean working surface
• Light oil or cleaning cloth

The goal is control — not complexity.

Step 1: Inspect the Shear

Before sharpening, check the condition:

• Is there damage or chipping?
• Is the edge worn or just dull?
• Is tension correct?

This determines where you start.

Step 2: Choose Your Starting Grit

• Damaged shears: 240–360 grit
• Routine sharpening: 400 grit
• Light touch-up: 600 grit or higher

Starting too fine wastes time. Starting too aggressive removes unnecessary material.

Step 3: Establish the Edge

This is where the real work begins.

• Use light, controlled pressure
• Maintain a consistent angle
• Work evenly across the blade

Your goal is to create a uniform scratch pattern — not rush the process.

Step 4: Refine Through Grits

Move through your grit progression step by step:

• 400 → 600 → 1000 → 2000 → 4000+

At each stage:

• Remove the previous scratch pattern
• Keep pressure light
• Stay consistent with your motion

This is where edge quality is built.

Step 5: Polish the Edge

Higher grits refine the edge for performance.

• Improves glide
• Reduces resistance
• Creates a smoother cutting feel

This step separates average sharpening from professional results.

Step 6: Set Tension and Test

After sharpening:

• Set proper tension
• Test cut the shear
• Check for smooth, clean cutting

If something feels off, go back and refine — don’t force it.

Common Mistakes

• ❌ Using too much pressure
• ❌ Skipping grit refinement
• ❌ Inconsistent angles
• ❌ Rushing the polishing stage

Most sharpening problems come from these.

FAQ

Can beginners sharpen convex shears?

Yes — with a consistent system and light pressure, beginners can learn this process effectively.

What’s the most important step?

Consistency. Angle, pressure, and progression matter more than speed.

Do I need high grits like 4000+?

For professional-level performance, higher grits improve smoothness and cutting feel.

Why aren’t my shears cutting after sharpening?

Usually due to poor refinement, incorrect tension, or inconsistent edge work.

Sharpening convex shears isn’t about guessing.
It’s about using a system, staying consistent, and refining the edge step by step.