Snap-off blade
A snap- off blade is a knife blade in which the blunt functional area of the blade is broken off along a prefabricated predetermined breaking point in order to free up an unused area for cutting. In this way, the sharpness of a cutting tool can be restored with little effort and without additional tools (such as would be necessary for sharpening, for example ) . These blades are available in 6 mm, 9 mm, 12 mm, 18 mm, 22 mm and 25 mm blade strips. The most common are the 9 mm and 18 mm blade strips. The 6 mm strip is only used as a pen cutter for graphic artists. The 22 mm and 25 mm blade strips are stronger (0.72 mm thick) and are mainly intended for interior construction purposes such as plasterboard or thermoplastic workpieces.
material
The blades are usually made of HCS (unalloyed tool steel), there are also titanium nitride- coated blades and in the USA / Japan bimetal blades ( HSS / HCS). Snap-off blades have been continuously developed. There are also blades with HSS bimetal and tungsten carbide as "high end" versions.
use
Snap-off blades are often used in cutters , as a very sharp blade is the basic requirement for most areas of application.