This video teaches you how to open a Rubik's Cube using a pair of scissors (and it says other household "tools" might work). After taking out the first block you can simply disassemble the other components as well. It's very useful if you are looking to replace a broken piece or if you can't solve the cube. Following the steps in this video will make you feel more comfortable about taking one of these cubes apart, since you might be afraid to break the cube while disassembling it. There is also a clear description of how a Rubik's Cube actually works (while it is taken apart), so it will give you a deeper understanding of the object, for purposes like building one of them yourself.