Somewhere I read a minimum of 1". I use a router jig where the workpiece
clamps even with the router. It is very simple and works well. You might
try another type of jig. BTW, I also own a Powermatic mortiser and since I
tried the router mortising jig, the Powermatic doesn't get near as much use.
I built a jig for my plunge router to do mortises. Found the design in
My problem is the router rides on a 3/4" piece of plywood and the work piece
clamps below it. So in order to reach the work piece and then the depth of
the mortise I have to pull the router bit out of the collett further than I
usually do in other applications.
How much of the shank needs to be in the collett? I don't want the bit to
wobble, or come out and tear up the work, the jig or me.
Thanks for advise.