Square base plate for mortising/dadoing - Router Forums
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post #1 of 13 (permalink) Old 09-26-2012, 06:39 PM Thread Starter
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Default Square base plate for mortising/dadoing

I am wondering how many people if any use this method. The reason I ask is that I just finished my first real mortise and noticed how the tracking can vary just by twisting the router maybe an eighth of a turn. I am using a PC with a stock round base plate but I am going to make a square b/p for the next attempt.

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post #2 of 13 (permalink) Old 09-26-2012, 06:48 PM Thread Starter
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post #3 of 13 (permalink) Old 09-26-2012, 06:59 PM
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Hi Mike,

Any base with at least one square side will help to eliminate that error.

Using the "fractionating baseplate" from Bill Hylton's "Router Magic" will help to get an exact fit.

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post #4 of 13 (permalink) Old 09-26-2012, 09:57 PM
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No question, a square/rectangular subbase is a method of constant edge to cutter cut.
I use it, but only on outside cuts. Sooner or later the plate bottoms out on the templet and the cut is complete no matter how willy nilly I handle the router. It's hard to find constants in routerdom and this is one of them and should be exploited.
Notwithstanding, any deviation with a straight line subbase on an inside cut will result in a spolied cutter pathway. You're trading one set of responsibilities for another!
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post #5 of 13 (permalink) Old 09-26-2012, 11:58 PM
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Yep, square is the way to go.

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post #6 of 13 (permalink) Old 09-27-2012, 09:53 AM
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Mike, everyone assumes the round sub base plates are centered on their routers and that is rarely the case. There are several methods for centering your router on it's sub base plate or on a mounting plate: centering cones, a inlay bushing with alignment pin or the Rousseau $5 centering kit. They all work; I like the Rousseau kit best.
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post #7 of 13 (permalink) Old 09-27-2012, 08:31 PM
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Mike, everyone assumes the round sub base plates are centered on their routers and that is rarely the case. There are several methods for centering your router on it's sub base plate or on a mounting plate: centering cones, a inlay bushing with alignment pin or the Rousseau $5 centering kit. They all work; I like the Rousseau kit best.

Mike, do you know where one can obtain a Rousseau centering kit?

Do the transfer screws come in different sizes? I would like one for the Makita and one for the Triton.

I have several new base plates to add to routers (aka BOBJ3) and want to make sure they are centered for guide bush use.

James
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post #8 of 13 (permalink) Old 12-02-2012, 10:35 PM
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Originally Posted by jw2170 View Post
Mike, do you know where one can obtain a Rousseau centering kit?

Do the transfer screws come in different sizes? I would like one for the Makita and one for the Triton.

I have several new base plates to add to routers (aka BOBJ3) and want to make sure they are centered for guide bush use.
Buy Base Plate Centering Kit 1 at Woodcraft
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post #9 of 13 (permalink) Old 12-03-2012, 05:12 AM
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Thanks Dan. I note they only ship to the lower 48.

I think I will find Mike's post on making your own plate and use that as a guide to correctly centre the plate.

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post #10 of 13 (permalink) Old 12-03-2012, 09:00 AM
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James, you should be able to find the transfer screws at a hardware store. If you want to order the Rousseau kits send them here and I will forward them.,

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