"They're an energy blade a good meter or so long with all the mass and wind resistance of a state trooper's maglight," Ray points out. "Unless you're Force-sensitive enough to know instinctively when to stop moving, you have to train the bejeezus out of your muscles to get them to understand where to stop. Otherwise you really do wind up with parts all over the floor. I practiced with a flashlight and a suit covered in photoresistors and a buzz packet until I had the hang of not swinging the millimeter too far and cutting off my own limbs."