Keith G wrote:

You should never attempt to drill metal without first using a punch
to make a little dint for the drill - I use a masonry nail which
allows pinpoint accuracy and then I make a pilot hole with a tiny
drill for starters, even when using the drill press...

I clamp the job on an x-y table, twiddle it to position, and use a (very
rigid) centre drill to start the hole (bigger than a dint).


--
Wally
www.wally.myby.co.uk
http://iott.melodolic.com