Originally Posted by fosser2
When you have your tablet opened up take a clear plastic bag and set it across the tablet. Mark the 4 screw holes and mark the reset hole on it. Then take this "guide" and flip it around and match up the 4 screw holes you drew with the ones on the back cover. Mark the reset hole location and drill the hole. Seriously, before you drill make sure the orientation of everything is proper. This is the easiest way to mark the reset hole. I did it this way and mine turned out like such.
It looks very professional and you can barely tell that it is there.
EDIT: I do want to add this. If anyone gives out dimensions I would not go and attempt to punch a hole without removing the back case. The clearance between that back of the case and the mainboard is much too close and any small slip of the hand will send you drilling into the board.
With the back cover facing up and the bottom edge towards you, I used 6 1/4 in from left and 3 13/16 from top. (Should have used 6 3/16 from left.) 1/8 in reset hole. Used a small piece of rubber to plug the hole. (Last 2 DRH releases, I made me rethink the wisdom of drilling. But I already had the cover off to resolder the power connection.)
But as fosser2 said, do this with the cover off. There is less than 1/8 in clearance. I was using a dremel and didn't have a drill press at the time.
All measurements in inches here... my apologies.