Before anyone works with chopped graphite fibers, you should understand what you are doing.
This stuff is already under review for medical effects similar to asbestos fibers. You need to wear a respirator (I am not up to speed on exactly what level of protection is recommended), you need proper ventilation, and you should follow rigorous clean-up procedures to remove any stray fibers in your work area.
These fibers can also float airborn, and are attracted to static electricity just like dust. When they land on circuit boards (TVs, stereos, you name it, even the iron has a circuit board now) they cause shorts.
Unless you just HAVE to have this stuff, I would leave it alone.