That's pretty much what I was going to write. Prick punch, to get the
location started. Brand new bit, 1/8. Use the next size larger, after that.
Can also drill from the inside out, which will help with the drill bit
wandering.

Some country folks would use a .22 rimfire rifle, from about 50 feet, to
make the initial hole. 40 grain jacketed solid.

Christopher A. Young
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"Smitty Two" wrote in message
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See picture he
http://www5.picturepush.com/photo/a/...mg/9153893.jpg

To drill metal, you need a sharp, quality drill bit. Not the cheapo home
improvement center bits. You also need some cutting oil, although
lubricating oil will do in a pinch. Also, start with a 1/8" drill and
work your way up. High RPM for the small bit, lower as you get bigger.

Lastly, lean into it. WIth a drill press, the quill handle gives you a
lot of mechanical advantage without you necessarily being aware of it.
WIth a handheld drill, you have to put your weight behind it. If you
don't, the drill will just get dull, rapidly.

For the guard rail, since it's curved, you might want to center punch it
to keep the drill from walking.