There are plenty of pocketknife enthusiasts in the world, but not nearly as many knife sharpening enthusiasts. This means many knife owners are walking around with dull pocketknives, and they’re not ...

Open the knife on your Swiss Army tool and place it on ... of the knife steady with one hand, insert the exposed blade into the V-shaped opening on your sharpener. Draw the sharpener over the ...

but to sharpen by hand requires patience and skill. [CNC Kitchen] instead decided to use technology to get around the problem, designing a 3D-printed tool to make the job easy (Youtube video ...