I have a SG with a push-pull switch that I want to replace with a regular pot and 3 position switch. I need to drill a 3/8" hole (or slightly larger) for the switch and want to do this in a way that does not encourage the finish to crack when drilling the necessary hole. Why use a toggle when you can use a push-pull? http://www.thegearpage.net/board/showthread.php?t=442217 It would be hard to clamp the surface of the SG flush to another piece of wood at least in view of the TOM studs, etc. and just drill from within the control cavity; although, if it is the preferred method using a small piece of wood could be arranged. Alternately, I wonder if using making tape in that area would work? And if so, do you drill from the outside (surface of the body) into the cavity or vice versa? Or, is there yet a better way to accomplish this?