PSI Barbering Practice Exam

What type of blade consists of a convex blade that has a bevel ground onto the blade edge?

1. Semi-convex

2. Convex

3. Cutting edge

4. Bevel edge

The correct answer is: Semi-convex

The type of blade that features a convex shape with a bevel ground onto its edge is commonly referred to as a semi-convex blade. This design combines the smooth, rounded profile of a convex blade with the cutting efficiency that comes from a bevel grind. The semi-convex blade is known for providing a balance between a softer cutting action and the ability to maintain a sharp edge, making it versatile for different cutting techniques, especially in barbering and hair cutting. The convex blade itself is fully rounded, providing a very smooth glide through hair, but it does not incorporate a bevel grind. The cutting edge is a more general term that refers to any sharpened edge of a blade, regardless of specific design characteristics. The term bevel edge generally indicates a blade design that is ground at an angle but does not imply the combined features of convexity and bevel grinding found in a semi-convex blade. Therefore, the identification of the semi-convex blade as the answer reflects its unique characteristics in the context of barbering tools.