craftgrrl | destroying computer bits.

I'm planning on making some barrettes and pendants and whatever out of a bunch of old motherboards and graphics cards I have around the house, but I'm having a fair amount of trouble cutting them up. They are very hard and brittle, with almost no give (computer parts, after all) I was thinking that a coping saw would probably do the trick, but I've only ever used them on wood, never for anything metallic. Would the edges be all sharp and scary? I would think if I sanded them, I'd be more likely to rub the sand from the paper. If anyone has done anything like this before, I'd love to hear the'r solution. Also, there are heat sinks and those breaker things that blow up and ruin boards instead of blowing up your whole computer and ruining everything, I forget what they're called, anyway, those are all over the place, and I think I'll have to melt the solder out of them to remove that stuff. If all else fails, I'm going to make a tandy computer guy out of sculpy instead.