Sickle Blade

Sickle Blade (鎌刃, kamaba)

Quick look

What it is: The most extreme curvature of the four Japanese blade line types
Japanese name: Kamaba (鎌刃), named after the sickle for its aggressive arc
Primary use: Texturizing and deep slide cutting techniques
How it works: Hair naturally channels toward the tip during closing, creating aggressive tapering

Why it matters

Japanese blade design classifies cutting edges into four line types based on curvature: straight (直刃), willow (柳刃), bamboo leaf (笹刃), and sickle (鎌刃). The sickle blade sits at the extreme end of that spectrum. Its curve is more pronouced than even the bamboo leaf, making it a specialist tool rather than an everyday cutter.

When you close a sickle blade, hair slides rapidly along the edge toward the tip. This creates heavy tapering and texture in a single pass. Where a bamboo leaf blade gives you a soft, feathered result, the sickle blade removes more weight and creates bolder movement. It is the most aggressive option for stylists who want dramatic texture without switching to thinning shears.

When to use it

Sickle blades work best for deep texturizing on thick, coarse hair. The extreme channeling effect pulls more hair through the cutting zone than gentler blade lines, so you remove volume quickly. This makes the kamaba a poor choice for fine or thin hair, where the aggressive action can over-texturize in one pass.

Most stylists who own a sickle blade keep it as a secondary tool. It pairs well with a straight or willow blade for precision work, then comes out when the cut needs movement and weight removal. Mastering the sickle requires confidence with slide cutting, since the blade’s curve amplifies every motion.