Custom ball spinner! drill press (brand new set at 600 rpm) flipped upside down mounted to work stand. Cut off head of large bolt, sandwich dog bowl between two large bolts. Used bike tire rubber on edge with super glue to give the grip/friction. Simply chucked up the bowl on chuck. Drill hole through top of drill press (right in middle of pulley belt) to flip over and mount to bottom of stand and then cut pole down so to not get in the way. Works better then the pro shop.