If You are getting a centering kit, There should be information about how to go about the procedure. I would do this: You will have to mark out the center hole for the shaft. I have made my own, but make sure that when You mark the center, that all the holes needed are dead center! You will be asked to take the finish plate from the bottom od the router. These plates can also be used to get the holes marked when nothing else is there. If I under stand what kit You are talking about, there will be a centering bit included with the kit. I made My own plate from a piece of heavy laminate that was used for flooring in heavy traffic, so once I marked My mounting holes from the router plate that I took off the router, I carefully marked around the hole that was in the original router plate, but, DON"T use that hole to mark the center hole, It can be used as reference only I installed a 1/4" in, or 1/2" pointed router bit, and rotated the router by hand to mark that center plate hole after the router was mounted to the new plate. Then I uninstalled the plate, and carefully cut out the hole for the shaft. I drill that hole with a special boring tool that actually uses a 1/8 in metal cutting bit, and can be used to cut a stepped hole. In order to be able to use all of the different bits, I would get a good bushing kit with all the sizes of the center holes for clearance . All of those bushings will use the same external holes to fit the stepped hole that You drill. Also, the brass bushings will fit into a special adapter bushing! I know that I don't call the bushings by the correct name, so I am sorry for that! here's hoping that this will give You some help. and avery one can do this, I believe! Good luck! By the way, Grizzly's, and Rockler have the boreing bit I used, and also the bushings that are used on the plate that mounts the router!
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Last edited by dutchman 46; 01-07-2014 at 10:14 AM.
Reason: Addl. informati on!