How do I drill into an existing galvanized fence post?

Question

I have an existing metal fence post, set in concrete, in which I'd like to drill a new hole in that post.

Normally, I would use a drill press to drill into a curved surface like this. Since the post is already set in concrete, this is not a viable option.

Is there some sort of guide jig or other tool or process to make this task easier? I'm having quite a time drilling even a small pilot hole.

Answer 1

I would use a punch to make a small dent in the pole so my drill bit wouldn't slip.

Answer 2

The punch suggested by SpectralGhost is a good idea.

If that doesn't work, you can make a jig with three pieces of 2x4.

Screw the pieces together and drill a pilot hole for the drill bit (the dotted line) using the same size bit you intend to use on the pipe.