Begin by using the center punch to mark the location for your pilot hole. Because of the non-stick surface of the Presto Pot, this step is important to guide your drill bit. Position it as close to the bottom as possible, but keep in mind that the resulting hole will need to be slightly above the heating element (don't want to end up drilling into the heating element).

Make sure you are wearing proper eye protection.

Using a small drill bit, create a pilot hole to guide the larger drill bit. The size of the smaller bit is unimportant, the point is to creat a pilot hole to guide the larger bit. without a pilot, things can get sloppy.