Drilling Steel
I've used the uni-bit pictured earlier after using a small bit for a pilot hole when drilling steel bracing for lattice towers a couple of times. These were done using a standard duty electric drill with either a 3/8 or 1/2 chuck.
On one occasion we had to drill one of our steel transmission poles. We used an ancient 1/2 chuck electric drill that seemed to be of a gear reduction type. It was a hell of a strong drill and we started out using small sizes and working up to the final size in two or three steps.
Each time mentioned we used "cutting fluid" it works much better than wd40 type of stuff
Take only what you earn, give only what you can, learn to respect yourself before you can expect to respect anything or anyone else.