Its correct they use a larger guide which is better for a couple of reasons. I have only seen them at Lee Valley and Oak Park. The plans for the base are free with the top.
It is easy to make your base work with the larger guides with a drill press or make a secondary base using the drill press to take the larger guides.
I have both the larger and smaller guides with many different shop made base plates. The router insert at Oak Park takes the larger guides so you may as well have your hand held take them too.
Last edited by dovetail_65; 01-20-2009 at 08:49 AM.