Not to sure why I tough you had a Oak-Park plate but that was my error..
Let's get back to the Rockler plate you have and made for the PC router.
If you are thinking of getting a PC that would be the way to go..
BUT if you want to mount your Bosch router take a peek at the link below. http://wealdentool.com/acatalog/tips_18.html
You will need to make a quick jig so you can line up the Bosch on dead center to the plate,,,...made a circle out out some MDF or 1/4" thick plastic..and 3 1/4" OD..with a 1/4" hole in the center...this jig will line up the plate to the Bosch...bolt pattern...once you have the circle made turn the Bosch upside down on the work bench, chuck up a 1/4" dowel pin or a 1/4" router bit.
The find 4 screws that are the same size that hold the Bosch sub plate to the router base ,, if you don't have any take one down to the ACE Hardware and pickup some screws or Allen Set screws that are about 1 1/4" long, once you have the set screws , put them in your battery power drill and grind them to a sharp point (cone point) then put them in the Bosch base plate with the hex in 1st...sharp point sticking out, about 1/2" or so..
Now sit the Rocket plate over the pin, and your jig and on top of the router, now flip it over and sit in on some scrap 2 x 4 , now with a hammer tap the base plate on the Bosch this will mark the spot to drill the mounting holes.and they will be dead on...
B/4 you remove the router made sure the holes are marked, now take it to the drill press and drill the holles out with a 1/16" to 1/8" drill bit,,,now flip the plate over and counter sink the holes, all 4 of them,,,now drill the holes out to the right size you need to bolt the base plate in place...to the Bosch router..
Your circle jig must be dead on, that's to say it should fit in the 3 1/4" and the 1/4" hole must be in the dead center.
It's best way is to drill the 1/4" 1st.and use it to cut the 3 1/4" OD..true...this can be done on the band saw/scroll saw ,just drill a 1/4" hole in some scrap put in a 1/4" flat head bolt in and then clamp it to the band saw table top and just turn the part to cut the 3 1/4" OD..if you are just a bit light rap some masking tape to get it to fit just right...in the 3 1/4" hole..
You can do it..
Originally Posted by ArtShapiro
Well, at the risk of overstaying my new welcome: Bob, ya' snowed me!
I see "Oak Park" is a manufacturer of routers and accessories, but don't understand what they have to do with the blue metal plate in question with the Rockler.
Anyway, this plate has an opening of about 3 1/4". I could envision a template with a protruding circle of precisely that size, and with the correctly oriented holes for positioning a drill press for drilling new holes.
But that would presumably cost as much, or more, than the new plate from Rockler!
Anyway, I'm hoping you can clarify your kind remarks.
As an aside, I'm now leaning toward just getting a Porter Cable router to leave in the Rockler table - except I have no idea which of the several Porter Cable-compatible plates I might happen to have.