If I recall correctly oak-park has two sizes of holes, one is the one for template guides (1 1/2") and the other a 3+" hole. Option one is to buy as second plate..... A second option is open the hole up on the one you have but when using smaller bits you would not want that big a hole so that is not really an option. I can think of a few other options if you want to "walk on the wildside" one is given below.pmspirito said:Can I use a hole saw to drill out an Oak Park Vac-U-Base-Plate to 3 1/2" to accomadate a panel raising bit I recently purchased? The large hole OP-BP is 3 1/8" and is not a Vac-U-Base-Plate. If I drill it oversize enough I figure I will not have to worry about being dead on in the center.
OR is there a base plate with various sized insert rings that is not shown in the online catalog ?