Making Wood Chips From Firewood?

I have a whole bunch of old firewood that's too dry to burn and a serious lack of wood chips. I was wondering if anyone knows whether or not it's a good idea to try tossing them into a wood chipper. My gut tells me it's a bad idea because they're chunks of firewood, but then who knows? I'm sure there are crazier people than me who've tried it. Any feedback would be greatly appreciated!