Amazing to think that something made from bad materials in such a crude manner with little attention paid to the specilized maths required to make these engines work, actullay WORKS. some may argue its nt going to produce much thrust but the point was could it run at all and it ticked that box totally. To see how it was made click here http://youtu.be/InvF9e5kyjo to see how to make a better one click here http://youtu.be/Gh34A0b8MrE And for all ifo on the parts needed to build one yourself