i love knives.

knives are simple, yet fascinating, considering the way that its underlying concepts are intergrated together into a useful, powerful, and awesome tool that the human civilisation could not have progressed so far without.

basic principle: pressure. When you sharpen a knife, you sharpen both ends evenly at the same angle from the grindstone, and after it has been sharpened, if you try to sharpen either side anymore, the other side will come crumbling off. which is to say, the surface area of the blade ULTRA small. Thus any small force applied to the handle exerts a very large pressure, causing the objects touching the blade to be split or punctured.

Another principle is the wedge, which is a simple machine consisting of two rigid inclined planes. When a slit is made, the wedge causes it to open up slowly, and the blade itself cuts the material at the point of contact.

Such is how a knife works. it is simple, yet effective and ingenious, and is an invaluable gift to the human civilisation.

Now that i have bought a few grindstones and i have a drill at home i'm gonna have fun. Currently requesting for GGY to give me one of his steel bullets to sharpen for him. aww well.

one day i could go jimr's house and grind up some stuff.