On Sun, 04 Apr 2010 16:15:01 -0500, Morris Dovey
wrote:

Let me offer yet another alternative - buy a half-dozen of these
http://www.leevalley.com/wood/page.a...=1,180&p=40089

Hell, two of the desired size will do fine. Just keep registering the
hole you've just drilled to maintain accuracy. I bought a set of these
LV guides and they work great. Anything else other than some semi-pro
home set up is a waste of money.