Odds are some or most of the holes will be near the edge of the sheetmetal.
In this case I've found using a punch (I use a whitney style) will give some
good results aswell. No distortion from the high drill pressure, no
scratches from the chips, easy to line up the hole (no walking drill bits),
plus the die's last quite a while even in stainless. Just a lil advice, but
some cases a drill is your only option.

--
Lynn "I have opposable thumbs, and I'm not scared to use em" Amick
http://www.amickracing.com

"PAROADHOG" wrote in message
...

Speed should be relatively slow. What size of drill? What thickness of
metal?
Pressure should be high.

Mostly clearance and pilot holes for sheet metal screws in ,yep, sheet
metal.