Lyn, this should be easy to prove. Trace around the sub base plate on a piece of graph paper. Get one of the give away paint stirring sticks and drive a brad through it, center it in the drawing and make marks on the stick where it meets the drawing outline. Now rotate it and see if the marks stay aligned with the outline. Chances are they will not since the sub base plate may be round but not perfectly centered on the base. This is why centering cones are sold and it is important to center your guide bushings to your bit.
Dont have any graph paper? Print your own!
"Living in the D" (this means Detroit!)
"It's fine to disagree with other members as long as you respect their opinions"
Last edited by Mike; 05-25-2011 at 03:05 PM.