I had looked at the Infinity Universal 7.5" Router Base Plate For Full Size Routers, Circular (115-030) plate, was impressed by the choice of 3/8" thickness, and admired the fact that Infinity offers a plate centering solution that is designed to work reliably. The $40 price seemed like a downside, the risk of having to pay for return postage, and the lack of verification via firsthand knowledge from some other user that the plate would actually center on my Bosch Router dissuaded me from placing an order.
The solution I finally arrived at was to source a universal plate from Eagle America. The plate has a precisely shaped center hole for the 1-13/16" Porter Cable style bushing, which is very helpful, and no mounting holes are drilled so there is plenty of unused material for placing the mounting holes you need.
Eagle America also offers a center alignment solution as well as a hole indexing solution. I ordered these items but they were back ordered so I proceeded without them.
I planned for the possibility of inaccurate hole placement by using oversized countersink and mounting hole sizes, but made the mistake of using the existing Bosch base plate to transfer the mounting hole locations to the new plate. When I was finished I had enough clearance to make the required adjustments, but I was surprised to see how far out my hole placement was.
I am looking forward to receiving the Eagle America Plate Centering Kit so the next time I do this the results will be more ideal.
Here is a photo showing the final set up:
Last edited by Ben Dado; 09-20-2019 at 11:19 AM.