On Sun, 26 Sep 2010 23:32:26 -0700, Rich Grise
wrote:

On Sun, 26 Sep 2010 21:23:33 -0500, Ignoramus24898 wrote:
On 2010-09-26, Karl Townsend wrote:

Spot drill if you need to hold +/- .002 location, stub drill maybe +/-
.005, regular drill maybe +/- .010 or worse. So how accurate determines
answer.

I will use a spot drill indeed. Full diameter holes with spot drill,
perhaps 1/8" deep, to provide guidance for the regular drill.

Is a "spot drill" the same thing as a "center drill"? (it kind of sounds
like it, from Karl's info here.)

Thanks,
Ric

No, they are different. A spot drill looks like a drill bit with a
special grind point.