Unfortunately, the drag knife blades for CNC routers are pricey — over $100 for a single blade. [Brian] at the Grunblau Design Studio took the price point as a challenge to build his own end ...

YouTuber “kiwami japan” has done just that and can be seen taking a supermarket bought roll of aluminium foil and transforming it into a fully sharpened kitchen knife complete with wooden handle.

It can store up to four snap-off blades in a removable cartridge, each one loading into place like a bullet and the whole cartridge like a pistol magazine. Check out a preview video. Published ...