Drilling is accomplished
with the use of a spinning drill
bit. The drill bit is used as a cutter
to remove the material to create a hole
in the work piece. Drilling can take
place on a milling machine, a drill
press, or even a simple hand drill.
Drilling is essential when creating
bolt holes in thicker pieces of
steel. When higher precision is required
a drill bit makes a pilot hole and a
reamer is used to cut the hole to the
desired size. With a drill bit and
reamer it is possible to hold a
tolerance of .0001.