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Centering your router on a mounting plate

41921 Views 61 Replies 37 Participants Last post by  niswanger
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It is very important that your router be centered on your mounting plate. Many people sweat over this for hours remeasuring before they drill their mounting holes. The quick and easy way to do this is with a centering kit from Rousseau. These kits work with all brands of mounting plates that accept Porter Cable style guide bushings and they cost $5.

Step 1. You chuck up the centering pin in your routers 1/4" collet.
Step 2. Insert the disk into the center hole of your mounting plate.
Step 3. Remove the sub base plate from your router, set it and the screws aside.
Step 4. Install the transfer screws into your routers base with the points facing out.
Step 5. place the centering pin into the disk, position your router to face the direction you want it mounted and lightly tap the edge of your router with a mallet. This marks the locations you need to drill.
Step 6. Drill the holes, flip the plate over and slightly countersink them.
Step 7. Using the new screws that came in the centering kit attach your router and it is perfectly centered.

If you are using a plate that accepts the larger Oak Park style guide bushings you can purchase a centering disk and a guide pin from them. You can purchase transfer screws from most hardware stores or tool suppliers.

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Hi Ian,

Mike is away for a short period.

However, the reason the router is centered on the mounting plate is so that the guide bushings are correctly centered.

If you never intend to use guide bushings, this is not critical as the cutter will reference of the fence.
Hey, Bob; out of curiosity, are your screws conical on the underside (flat head screws) or flat on the underside (round or pan head screws). I keep seeing references and comments in books and articles suggesting replacing the existing OEM ones.
If either the countersink or the screw is conical then for sure it'll pull away from where you want it.
+1...

Flat bottom screws into slightly oversized flat bottom holes.
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