Nakayama MIR stands out for its unmatched sharpness, precise height control, and excellent bendability. As shown, it offers a smoother polished surface than other products. Thanks to its mirror finish and minimized height variation, MIR delivers sharp edges, easy processing, and reliable performance—making it a trusted solution for diverse challenges.

To make better products, Nakayama designs and manufactures the equipment used to produce MIR blades in-house. This means we can steadily update and constantly improve our products.Also, we have selected the optimal grinding wheel for MIR blades based on trial and error over the course of our long history.
The MIR pre- and post-process stages are important as well. We focus on fundamentals such as heat treatment and pre-polishing during the pre-process stage, as well as during the post-process stage after MIR is complete, and succeeded in improving non-contact automation of cutting equipment that cuts to exact product sizes.

Back in 1992, Nakayama began developing cutting rules that resist breakage even when bent—based on customer demand. The process took years of trial and error, as coarse grinding wheels caused cracks. So we switched to fine wheels, gradually refining the blade and eliminating grooves. The result was a polished, flexible, and razor-sharp edge—named “MIR,” short for “mirror.” We also engineered custom grinding wheels exclusively for MIR, ensuring its unmatched quality and consistency today.

MIR (Center Bevel)

MIR Double Long Bevel

MIR Side Double Long Bevel

This is a side double long bevel cutting rule with the second step also mirror-finished. One side is finished at an acute angle, resulting in a straight cross section. Since the cutting edge is at the center position, there is no need to adjust CAD data.