Extra Sharp Box Cutter

This is by far the most sharp knife on MakerWorld. It is designed with strength so that it lasts way longer than traditional 3D Printable knives. If you want the most durability though use 70+ infil and 0.2mm nozzle. It is inspired from a karambit knife, with some changes to make it more suitable for cutting. Prints in less than an hour (if you have normal infil) and uses only 25g of filament! This is great to have around in case you ever need to cut off that annoying tape on an amazon package.