If you look carefully where the arrows point in this picture
you can see a dent very close to where you
would be drilling the hole. Don't drill this side. The bit will wander,
possibly even if you have used a center punch. If the bit wanders it will
at best drill in the wrong place, and at worst will break the drill bit
and possibly hurt you when it goes flying.
The next page has a picture of the correct side to drill. |