How to solve the Hanayama Cast Spiral metal puzzle

Check out this video tutorial on how to solve the Hanayama Cast Spiral metal puzzle. These cast iron Hanayama puzzles are a great way to kill time and sharpen your mind, and this Cast Spiral puzzle will do that with a level 5 out of 6 in difficulty. See how to disassemble and reassemble it.

From Hanayama himself: At first glance, this puzzle by Kennet Walker of Rivermore, California doesn't seem unlockable. The five pieces, however, can most certainly be taken apart. Putting them back together, however, is a whole new problem in itself. My suggestion for solving this puzzle would be to not apply too much pressure. Solve it or not, the five pieces exude a kind of elegance, spiraling into a comfortable fit in the palm of your hand. The key word is 'spiral'.