A Tall Router Table Fence for Lock Miter Joint & Tenons

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Blog entry by stefang posted 02-26-2010 11:44 PM 6504 reads 4 times favorited 33 comments Add to Favorites Watch

I needed a special fence for routing lock miter joints. I found one designed by Norman Ellis who sent it in as a tip to another website. The fence I made below is 7” tall. It can be clamped to your regular router table fence. I jointed the top and bottom edges of this fence making sure that they were parallel.

Click to enlarge photos


Here it is with the sliding fence mounted and another pic with a workpiece clamped onto the slider. When you rout it you should hold the lower portion of the workpiece with medium hand pressure pressing it toward the fence without getting your hands anywhere near the bit.



Some slider details: The 2nd shot is the back of the slider.



Her are two pics of a routed lock miter joint. Keep in mind that this is construction quality Fir. Note the tear out on the trailing edge. This is normal with LM bits, but a thin Ply backer between the slider fence an the workpiece might reduce that. I haven’t tried it yet. Unless it is plywood you should route lock miter joints in one go to prevent chipping.



More good news! you can also use this set-up to rout tenons. The faces are routed with the workpiece clamped in the jig as in the first photo.

I routed the edges by clamping one of the other tenon workpieces in the slider and then holding the current workpiece edge against the fence and it’s face against the edge of the one in the clamp. It was routed like this being hand held.


The tenon routing finished


The routed morise (which I messed up a little lifting it off the spinning bit)


Here the tenon edges have been rounded to match the routed mortise.


And finally a dry fit. What do you know? It came out perfect!


I hope you find something interesting here and get some use from it. Thanks for viewing.

-- Mike, an American living in Norway.

33 comments so far

View nattnaifeh's profile


17 posts in 3004 days

#1 posted 02-27-2010 12:00 AM

How are you able to put your photos on the blog, all i could figure out is to put a link to te photos. I tried to email you but i have yet to post enough blogs to send emails. Thank you and I love your work.

View degoose's profile


7231 posts in 3348 days

#2 posted 02-27-2010 12:05 AM

Great set of instructions and pics… You make it all look so simple..

-- Don't drink and use power tools @

View lew's profile


12051 posts in 3749 days

#3 posted 02-27-2010 12:09 AM

Great idea, Mike!

I like tall fences. They really do provide additional stability. I also like they the extra height gives me a place to clamp feather boards, when I need them.

I really like your home made toggle clamps. May have to “borrow” that!


-- Lew- Time traveler. Purveyor of the Universe's finest custom rolling pins.

View patron's profile


13603 posts in 3334 days

#4 posted 02-27-2010 12:15 AM

mike ,
the more i see of your work ,
the more i am coming to believe
you really work for nasa ,
or at area 51 in nevada ,
making wooden stealth airplanes .

i’m having a hard time believing you
fell off of a watermelon truck
in norway ,
and took up woodworking !

these jigs are world class ,
and so are you !

-- david - only thru kindness can this world be whole . If we don't succeed we run the risk of failure. Dan Quayle

View Gary's profile


9330 posts in 3426 days

#5 posted 02-27-2010 12:18 AM

Pretty sharp. Only thing wrong was that white stuff glaring in the window. Gave me the shivers

-- Gary, DeKalb Texas only 4 miles from the mill

View Jim Bertelson's profile

Jim Bertelson

4170 posts in 3158 days

#6 posted 02-27-2010 12:51 AM

Looks great as usual Mike. You have a knack for making the difficult look easy. Working on my sled some. Sherie was gone for a week so I had to do her chores and cook for myself as well. Now she is back.

I am hoping the sled becomes a base for some jigs. It will be easy to disassemble except for the rails, which are working good. Well, off to wipe down some Watco treated stuff…...........

-- Jim, Anchorage Alaska

View Beginningwoodworker's profile


13345 posts in 3666 days

#7 posted 02-27-2010 12:52 AM

Nice idea!

View Chips's profile


199 posts in 3706 days

#8 posted 02-27-2010 02:15 AM

Another great post. Thanks Keep it up.

-- Make every day the best day of your life. Chips, Mississippi

View a1Jim's profile


117085 posts in 3570 days

#9 posted 02-27-2010 02:20 AM

Super blog Mike great idea well built and good photography. Thanks for sharing another winner.

-- wood crafting & woodworking classes

View toyguy's profile


1649 posts in 3830 days

#10 posted 02-27-2010 02:25 AM

well done my friend

-- Brian, Ontario Canada,

View stefang's profile


15881 posts in 3327 days

#11 posted 02-27-2010 11:48 AM

Thank you for all the praise guys, but remember the real credit for these jigs goes to the people who invented them. The only jig type thing I have designed myself is my plywood toggle clamps, which I am proud of, but even they are the same principal as the ones you buy. That said, I love the praise anyway even though I don’t deserve it!

David Bio-degradable wooden space ships? I like the idea, we just have to work on the lift off problem.

Mario Det er hyggelig at du liker mine innlegg. Takk for det.
How did you do that Mario? Do you have a computer translator or a secret Norwegian girl friend?

Nattnaifeh To post photos to a blog or even comments to a post you need a 3rd party photo host. I use Photobucket which is free.

You upload the photos from your computer gallery to Photobucket and after uploading you will get a little menu on top of each picture. You click on ‘share’ and you get another menu with a list of the different links. For Lumberjocks use the HTML one.

You can choose either large pictures or small ones that can be enlarged by clicking on them like the ones in this blog. You just copy the HTML code over to the text area of your blog and then enclose the copied info in quotation marks (one at the beginning and one at the end with no spaces). Then you can click the green ‘preview’ button to see if works.

I don’t think you need to blog to send private messages. Just click on the person’s name or picture which will take you to his home page, and there you can on ‘send a private message’. Hope all this helps you. Good luck.

-- Mike, an American living in Norway.

View 559dustdesigns's profile


633 posts in 3161 days

#12 posted 02-27-2010 12:16 PM

Nice fence. Thank you so much for sharing this with us.

I agree with Patron.

Are you sure you can share these classified NASA trade secrets? lol.

-- Aaron - central California "If you haven't got the time to do it right, when will you find the time to do it over?"

View stefang's profile


15881 posts in 3327 days

#13 posted 02-27-2010 11:51 PM

Mario Photo 8 is a table stretcher which will have a tenon routed on it. I am impressed with your translator. It isn’t perfect but is pretty darned good.

After posting this I cut 16 tenons and the all came out great and the job was done quickly, but I also did the mortises with the router just for fun. The mortises took a long time with having to raise the bit 1/4” for each run of 4 legs. They came out well though. I have a mortising attachment for my combi machine and that goes a lot faster than with the router. I usually try to use the quickest way, so I always think about which tool is best for the work I’m doing. The router can do a lot of different tasks, but not always as efficiently as other machines or even handwok.

-- Mike, an American living in Norway.

View Roz's profile


1699 posts in 3780 days

#14 posted 03-03-2010 12:26 PM

Great post, thanks.

-- Terry Roswell, L.A. (Lower Alabama) "Life is what happens to you when you are making other plans."

View stefang's profile


15881 posts in 3327 days

#15 posted 03-03-2010 04:38 PM

Thanks for the kudos. Here is a picture of Mike’s “fine woodworking” ha ha. My son has limited place for his washer and dryer so he has it stacked. The problem is that the washer moves around a lot when it starts the spin dry process. Leveling hasn’t helped much. All that movement isn’t good with the dryer directly on top, so they asked me to build them a stand that the washer can sit under. The criteria for the stand was (1) room enough to house the wiggly washer, (2) adjustable for leveling, (3) strong to support all the weight and (4) not too ugly.

I bought $20 worth of construction fir for this project. They will be moving in the foreseeable future so they won’t need it so long. I was glad to do the project to try out my new router and the fence/jig above. I’m going out to the workshop now to make the top from a surplus Beech stav laminated platter I’ve had stored for some time.

My main reason for posting this was to show off my new found “skills” with adding text to my photos. Any tips are more than welcome. I couldn’t get those arrows very straight!


It’s been awhile since I’ve been much in the shop. “How sweet it is !”

-- Mike, an American living in Norway.

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