Using 13 disposable cameras, the barrel of a BIC pen, a single D cell battery, and some wire, Matt Hack created an awesome Coil Gun.
Apparently at $1 each, these capacitors are dirt cheap, and i would agree. However, I would probably use the cameras first, or at least keep the film (he trew it out), 35mm film will stay around for a long time, and I still use my 35mm Nikon SLR.
That looks dangerous…
That actually looks kinda cool looking.
The finished weapon, deadly unknown, awesome, very much so.
Here’s a few videos of it in action, and some sparks too!