Moving Blade

Moving Blade (動刃, Doba)

Quick look

Position: Thumb side
Function: Does the actual cutting motion by closing against the static blade
Wear rate: Faster than the static blade
Japanese term: 動刃 (doba, literally “moving blade”)

Why it matters

The moving blade is operated by your thumb and does the work of closing against the static blade during each cut. Because it moves more and engages hair at an angle, it experiences more friction and wears faster than the static side.

Most manufacturers design the moving blade to be slightly more robust or give it a marginally different grind angle to compensate for this extra wear. When you notice your scissors starting to push or fold hair, the moving blade is usually the first one that needs attention.

Proper opening angle

Japanese training recommends opening your scissors to about 30 degrees for a standard cut. Opening wider than necessary puts extra strain on both the pivot and the moving blade’s edge. You’ll see some stylists opening their scissors 45 or even 60 degrees out of habit, and that accelerates wear without any cutting benefit.

Identifying your moving blade

If you hold your scissors in cutting position with the tips pointing forward, the moving blade is the one on top (thumb side). Some manufacturers mark it with a small dot or different serial number to help during assembly and maintenance.

Related: Static Blade

Hit Point

Pivot Point

Related guide: Tool Mastery: Shear Anatomy