See what happens when you combine a solution of thiocyanate ions (on the cotton ball) and a solution form of iron(III) which has a yellowish color (on the knife).
 

The Port Royal retails for $25 000 and as the name suggests, it is a gun and knife in one.

A chef demonstrates his skills with a knife by slicing meat balanced on top of a balloon. Chen Zibao showed off his delicate touch by cutting raw pork slices using a large cleaver on top of the balloon without popping it, in Wanzhou, Sichuan Province, China. [Telegraph]

This Katar/Flintlock pistol has a 9 ½ inch blade and 2 inch steel cannon barrels. The intricate and detailed design showcases beaded rims and embossed metal, which makes it a collector’s item that costs anywhere between $6000 and $8000.

The hero of this game is a hunter who uses a giant black knife. His mission is to kill the monsters in the village.

Using a knife, pages of a book and incredible talent, someone was able to create these stunning sculptures. Nearly impossible to explain, but breathtaking to look at, you have to see these carved out creations to believe them.

A Hindu devotee applies kohl on his eyes with a knife held between his legs as he performs a stunt during a rehearsal for the 134th annual Rath Yatra, or chariot procession, in Ahmedabad, India [Telegraph]

For four years Li Fu unknowingly walked around with a 4-inch knife stuck in his brain. The 37-year-old man complained of continuous migraines but it wasn't until x-ray technicians performed an x-ray on him that they made the grim discovery. How he survived with that knife in his head is a mystery but he is now pain-free and in stable condition after successful surgery to remove the blade.

It’s not easy to make a good knife. The process is very long but interesting. Right now you have a unique chance to see how Japanese knives are made from the very beginning to the end. Enjoy!