Repeatedly bore accurate holes through metal, wood, plastics or other round shapes with this simple method and a drill press. The principal is quite straightforward; easily find the top dead center (T.D.C.) of a round rod, usually a difficult task without specialized tooling. This tip readily allows the use of a common rectangular drill press vise, hand screw, or simply wedging the round work between two parallels to hold it fast while finding and boring T.D.C. To clearly demonstrate the principal I used a shop made "V" block which would suffice by itself for this task.
Obtain a short piece of flat metal to serve as the indicator, and a centered pointer of appropriate size to act as a fulcrum. Apply slight downward pressure of the quill against the setup and observe the flat for parallelism to the fixture.