Blunt Cut
Description
Blunt cutting creates clean, solid weight lines by cutting hair straight across at the same length. The foundation technique every stylist must master first.
Blunt Cut (ブラントカット)
Quick look
- What it is: Cutting hair straight across at a consistent angle to create a clean, defined line
- Also called: One-length cut, bob cut foundation, line cut
- Key requirement: Decisive, full blade closure with no hesitation
- Best scissors: Straight blade or sword blade, beveled or semi-convex edge, 5.5 to 6.0 inch
Why it matters
The blunt cut is the foundation technique. Every other cut builds on top of it. Bobs, one-length shapes, and geometric work all depend on your ability to close the blade cleanly through hair without deflection or drag.
Precision here comes from blade geometry, not from force. A straight blade gives you a predictable cutting line because the blade edge runs parallel to the section. Sword blades work well too, especially for thicker hair, because the extra mass near the pivot keeps the blade stable during closure.
Edge type matters more than most stylists realize. A beveled edge grips the hair slightly as it cuts, which prevents slipping on coarse textures. A semi-convex edge splits the difference between grip and glide. Pure convex edges can push fine hair forward on blunt lines, so they’re not always the best choice for this technique.
Recommended scissors
| Feature | Recommendation |
|---|---|
| Blade type | Straight or sword |
| Edge type | Beveled or semi-convex |
| Size | 5.5 to 6.0 inch |
| Handle | Offset or classic for wrist comfort during repetitive line work |
Technique notes
Section tension is everything. Uneven tension creates uneven lines regardless of how good your scissors are. Hold sections with consistent finger pressure and cut in a single confident closure.
Avoid “chewing” the line by opening and closing mid-section. One clean close per cut. If you need to reposition, open fully, reposition, then close again.
For bob work, the hit point alignment becomes critical. If your blades aren’t contacting cleanly from heel to tip, you’ll see micro-steps in the line that no amount of cross-checking will fix.
Related links
| Straight Blade | Sword Blade | Beveled Edge | Scissor Sizes | Hit Point |
Verified Sources
- Tertiary SalonExam — Hair Cutting Techniques (reference)
Frequently Asked Questions
Every other cut builds on top of it. Bobs, one-length shapes, and geometric work all depend on your ability to close the blade cleanly through a section without deflection or drag. Precision comes from blade geometry, not from force — a straight blade gives you a predictable cutting line because the edge runs parallel to the section, and sword blades work well for thicker hair because the extra mass near the pivot keeps the blade stable during closure.
Pure convex edges can push fine hair forward on blunt lines because they slice through the hair with less grip than beveled geometries do. Beveled edges grip the hair slightly as they cut, which prevents slipping on coarse textures and keeps the cut line defined. Semi-convex edges split the difference, giving moderate grip with cleaner release. For blunt work on fine or slippery hair, a beveled or semi-convex edge usually outperforms a full convex.
You get micro-steps along the cut line that no amount of cross-checking can fix. Blunt cutting requires one decisive closure per cut — no hesitation, no mid-section adjustment. If you need to reposition during a cut, open the blades fully, reposition the section, and close again as a single clean motion. Hit-point alignment becomes critical on bob work: if the blades aren't contacting cleanly from heel to tip, the line will show micro-steps even when your technique is otherwise perfect.