What You Need To Know About Scissors©
These are the only two types of scissor blade cutting edges.
Neither edge is right or wrong, only different.
Blades vary in shape, width, length, degree of the tips taper, however. the cutting edge will be either convex or bevel.
State of the art, smooth cutting blade, and requires the least amount of thumb force. A must for slide cutting. These are harder to manufacture and therefore more expensive, but worth it. Micro-serrations sometimes available.
Use a scissors service center that will maintain manufacturers specifications, you want the original edge not a less precise bevel edge. The best repair service is the one that helps you maintain your scissors performance and extend its longevity.
The traditional blade design originally found on European scissors. Cuts well, but requires more thumb force than the convex blade. Less complex scissors to sharpen. Not as adept for slide cutting. Serrations for holding hair are sometimes available. Very durable and has a medium precision capability. Cost effective and easier to manufacture. Less expensive to purchase. Many scissors from Europe are produced with a convex edge today.
Sensei Shear Systems provided the pictures of the blades. Thank you