Grintec K2
The Grintec K2 is a Precise honing guide specially designed to sharpen traditional Japanese plane irons. In comparison to Western plane irons, Japanese irons are much shorter and thicker. They are also roughly wedge-shaped from heel to edge and the sides are also often not parallel. These points suggest how difficult it is to design and build a honing guide that will hold the irons in place while sharpening them. The name "Grintec" is a mix of the words "grind" and "technology".