Yeah, Id like to know that too. I used the chuck of the drill to make wheel hubs. Used an angle grinder to remove most of the chuck so I was left with the small threaded part and a plate with 3 hole in it that the jaws moved though. The only problem was that after a few fights the chuck jammed onto the drill shaft and I couldnt remove the whell or gearbox from the robot. Because it was between nights of a compition we pretty much destroyed the drill gearbox to remove it from the robot, so I could get the new wheel (and new drill too by that stage) in before my next fight.