Production

From the blank to the finished scissor

4. Surface treatment

Grinding scissors and shears is an elaborate manufacturing process which is either carried out by hand (eye rings and handles cannot be machined) or by special 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 most important manufacturing steps are:

a) eye rings and shank: rough and dry-fine grinding inside and out

b) joint area and blade edges: rough and dry-fine grinding, smoothing, nickel-plating

c) grinding between, cutting edge and inner side: the grinding must follow the twist or turn of the blade´s inside.

In order to protect the surface against corrosion, scissors and shears made of normal steel are nickel-plated. Subsequently the scissors or shears blade are ground on the inside. Scissors and shears made of stainless steel are polished or brushed.

5. Assembly

5. Assembly
During final assembly the shear blades are screwed together. The cutting performance and the easy closing action along the whole cutting length of the scissors or shears 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) honing the cutting edges on the oilstone

b) screwing the shear blades together and pointing them, i.e. straightening

c) final inspection: testing the cutting property and action of the scissors or shears.

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