Wind up the spring and stab someone, then press the button on the shaft and the spear tip goes in and out a very small distance at 30,000 times per second. A large spring turns a gear train which turns a vertically recorded cylinder with a 30Khz sine wave on it. The tip oscilates in an and out and you can vaporize blood (with the sound waves) and you can use it in a tearing motion too as it is like a saw.-- Amishman35, Nov 30 2003 I don't just have weapons, I have other mechanical A/V equipment that shouldn't be posted.-- Amishman35, Dec 01 2003 Okay, First I will update the Ring phonograph, then I will add the Mithril Credenza, then I will redo the Palantir Television System with videodisc player, then helically scanned film, and lastly the Amberola 31.-- Amishman35, Dec 01 2003 best idea ever.-- BillyBoy, Dec 01 2003 Remind me to buy a new blade for my electric razor.-- RayfordSteele, Dec 01 2003 This would be better if it also got really hot, and was radioactive. And poisoned with curare. And 20 feet long. And tipped with francium.-- bungston, Dec 01 2003 Why? ... are guns and knives and rocks and nuclear weapons not GOOD enought for you?-- Letsbuildafort, Dec 01 2003 Yes, which is why this item should incorporate all of them. Did I mention you can shoot rocks from the butt? Of the spear! Oh, wait.. were you addressing me, [Fort]?-- bungston, Dec 01 2003 Makes a lovely gift. *Evil thoughts*-- thumbwax, Dec 02 2003 random, halfbakery