ok this i do know something about. this is what you're gonna wanna do. get some of the wide masking tape and wrap it around a few good times in the general area you want to put a hole in, get you a water bottle or something that has a small neck...like one that comes in all those hair dye kits and fill it with water.....then you start a very small steady stream right where you want the hole. then as you're doing this start drilling, the tape acts as support (and incase it breaks keeps it all together for easy clean up) and the water reduces all the friction which makes it even less likely it will break....don't take it too fast, just take your time and keep water dripping on it and it should work.