Production

From the blank to the finished scissor

3. Mechanical and surface treatment

Grinding scissors and shears is an elaborate manufacturing process that needs to be done with precision machines. ZWILLING J.A. HENCKELS pays particular attention to the interaction of crescent, draw and twist. This is decisive in ensuring that the blades meet only at one single point along the length of the blades and that the material is cleanly held and cut.

The manufacturing steps are:

a) punching out blank from strips of steel

b) grinding the blank: working the edges and surface of the blank

c) grinding inside and crescent

d) grinding of the blades with inset and cutting edge

e) shank and eye rings: the plastic handles (glass fibre reinforced polyamide) are being attached.

4. Assembly

During final assembly the shear blades are screwed together. The cutting performance and the easy closing action along the whole length of the blades are determined at this stage.

ZWILLING J.A. HENCKELS fitters and controllers are highly skilled specialists.

The following steps are carried out during assembly:

a) assembly: the upper and lower shear blades are assembled with a bearing bush and screw and then pointed, i.e. straightened

b) marking: the trademark is etched in

c) final inspection: testing the cutting property and action of the scissors or shears and honing on an oilstone

d) extremely stringent quality control is carried out by ZWILLING J.A. HENCKELS during each production stage.