Router Centering Jig

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Project by HokieMojo posted 2043 days ago 8098 views 13 times favorited 7 comments Add to Favorites Watch

This will be my last jig for a while, but I thought it might be helpful for others to see. I haven’t used it yet, but would welcome advice or warnings. I made this cut slots in some railings. I’ll use a 3/8’s inch spiral upcut bit to accomplish this. I’ll then fit slats into the grooves I cut, shich are 3/8’s inch thick and ripped to width on the table saw. I used a 3/8 semi circular router bit to roundover the sides. The best way to describe this is probably to say that the slats are shaped like REALLY long dowels for a Festool domino. I hope that helps explain what I’m trying to do.

This will be used to make a crib gate. I wanted the slats to be rounded over and I also didn’t want to use the “cut a dado, and fill the gaps with spacer block technique”. There is nothing wrong with that (as far as I can tell), I just wanted to put my own twist on things. I guess I could have used a drill press followed by a chisel to clear our the center, but thats a lot of handcut mortises and I’m on a deadline. Anyway, have a look at the photos. Basically the jig attaches to a plunge router base. you twist the router until both pegs ride along side of the board you are putting the groove in, and then plunge to make the cut.

If you want more details on the construction, just post and I’ll respond here. Hope you like it.

7 comments so far

View jm82435's profile


1259 posts in 2366 days

#1 posted 2042 days ago

Looks like it should work well. thanks for sharing.

-- A thing of beauty is a joy forever...

View aldente's profile


175 posts in 2038 days

#2 posted 2037 days ago

great idea.

-- Rodd, Texas grandpa

View Pete_Jud's profile


423 posts in 2377 days

#3 posted 1932 days ago

centering jig are great i have made quite a few and have one for the router as well, great job.

-- Life is to short to own an ugly boat.

View a1Jim's profile


112008 posts in 2201 days

#4 posted 1932 days ago

Now you can be well centered. good job

-- Custom furniture

View Richard's profile


852 posts in 1314 days

#5 posted 991 days ago

Some places sell just about the same thing , but I tink yours cost less and will do the same job just as well.

View Coupe06's profile


6 posts in 1309 days

#6 posted 860 days ago

‘Works for me…
...and as a 2nd thought, yeah, I’d like the chance at putting one together for my own “muscle-memory”.


-- Coupe06-Actual

View RandyM68's profile


693 posts in 942 days

#7 posted 860 days ago

Coupe, thanks for bringing this back to the top. It looks like a great idea to me too. I can see a lot of uses for it. I’ll probably pick up another router and leave this jig mounted to it. If I make it with inter-changeable dowels, it should work either on the face of a narrow board, or on the edge with longer dowels. Great idea Hokie.

-- I can explain it to you, but I can't understand it for you. I'm sorry,thanks.

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