Scissors: Technical terms The most important parts of a pair of scissors are:
1. The two halves of a pair of scissors - upper and lower shear blade.
The upper shear blade is the pointed part of the scissors (where the screw head and the trademark is visible). The lower shear blade is the corresponding lower part of the scissors. Both parts are connected by a screw (technical expression: stud).
In order to cut well, the scissor blades must be formed and fitted that the cutting
edges remain in contact when the scissors are closed. When cutting and closing
they should only touch each other at one point.
Because whatever needs cutting must not press the scissor blades apart, both
blades are bent slightly against each other (draw) and turned (twist). The special
finish of the inner surfaces of the blades (inner side) supports this action by its
The upper and lower shear blades of high-quality scissors are manufactured with great care and then precisely joined.
All scissors and shears by ZWILLING J.A. HENCKELS are so well manufactured
that, when the scissors are closed, the blades sit together tightly from the point
to the joint area. A fine hollow-ground and an even crescent give the scissors its
2. The joint area
The joint area connects both blades with the screw. The crescent over which both shear blades run, sits exactly in what is called the "between". The exact form of the crescent and the precise assembly of upper and lower shear blades ensure the easy closing action of the scissors. High quality scissors and shears can be operated effortlessly and evenly. They have the so called smooth action.
3. The cutting edge
The cutting edges on the upper and lower shear blades are the essential, sharply ground working parts of the scissors. Cutting edges are either smooth or serrated.
a) scissors with a fine cutting edge
The fine cutting edge is suited for cleanly cutting thin and light material such as
paper, fabrics and foil.
b) scissors with serrated cutting edge
The serrated cutting edge is a feature of scissors and shears with special functions such as poultry shears.