Tenon jig to make log legs for slab tables

  • Advertise with us
Project by HalDougherty posted 07-12-2011 02:30 AM 10800 views 24 times favorited 12 comments Add to Favorites Watch

A few days ago, I saw a great blog post about making a tenon jig by (Don W) that used a router to cut tenons on round stock. It looked like a bigger version of a jig I made a long time ago to make dowels from square stock. Today I made a jig just like it, except I clamped it to my router table instead of attaching a router plate to the top. I just turned it upside down and attached two extensions to clamp it to the table. The last photo shows the tenon in a scrap block with a 1 1/2” round mortise. This face plate has a 1 1/2” hole and I also made a 2” diameter hole in another face plate. Only the 2” forster bits at the hardware store were over $30. 1 1/2” tenons will be fine. It should speed up making rustic tables and I’ll have a use for small tree limbs so there will be less waste. Look for more table and bench projects soon.

-- Hal, Tennessee

12 comments so far

View Don W's profile

Don W

16821 posts in 1656 days

#1 posted 07-12-2011 02:36 AM

cool. When I built mine I had’t built the router table yet. I’ve been going to convert mine so it works like yours does. Another project just waiting for the right moment.

-- Master hand plane hoarder. -

View devann's profile


1920 posts in 1781 days

#2 posted 07-12-2011 05:22 AM

Cool jig. where did you get that bit?

-- Darrell, making more sawdust than I know what to do with

View BTKS's profile


1984 posts in 2553 days

#3 posted 07-12-2011 07:41 AM

Thanks for posting!!!!
This one went straight to favorites. I plan on splitting some honey locust logs soon. The big plan is some patio benches and maybe a shave horse. Who knows, the trees gotta go, so they may as well be something besides firewood. This will be a huge help, I was going to turn them on the lathe but this will be a lot easier.

-- "Man's ingenuity has outrun his intelligence" (Joseph Wood Krutch)

View EMVarona's profile


437 posts in 1924 days

#4 posted 07-12-2011 01:15 PM

Very interesting. With some additions, this can be used of dowel making as well.

-- Ed "Real happiness is one that you share."

View HalDougherty's profile


1820 posts in 2326 days

#5 posted 07-12-2011 02:01 PM

I bought the bit on e-bay. It came in a set of round bits from 1/4” to 1 1/2”. Any round nose bit will work, but the larger the bit the bigger the limb that can be cut.

To make a dowel jig, it needs a hole in front of the cutter to center the square blank. for a 1” dowel, measure a 1 1/8” inch square from corner to corner and cut a hole so it fits, but will still turn. Cut down one end so you can chuck it in a drill and spin it as your router cuts it. You get a much smoother result than I got on these big tenons. They tend to wobble and the limbs aren’t straight enough to use a pilot hole with them.

-- Hal, Tennessee

View Bertha's profile


12982 posts in 1782 days

#6 posted 07-12-2011 02:09 PM

This is fantastic! Nice job.

-- My dad and I built a 65 chev pick up.I killed trannys in that thing for some reason-Hog

View STL's profile


68 posts in 1920 days

#7 posted 07-12-2011 11:31 PM

Great job! Thanks for sharing!

-- Dan Siggers, Alabama,

View Jiri Parkman's profile

Jiri Parkman

951 posts in 2901 days

#8 posted 07-13-2011 09:34 AM

Perfect. Thanks for sharing. It’s on list.

-- Jiri

View HalDougherty's profile


1820 posts in 2326 days

#9 posted 07-14-2011 05:12 AM

Here’s how I cut the legs for the bench. The sawblade on my sawmill is parallel with the deck and all four legs are going to be exactly the same length in just a few seconds. After I flatten the top and finish sanding the top, I’ll make a project page to show the bench tomorrow. The top is a slab from a Bartlett Pear tree. Pear is at least twice as hard as hard maple. Then I have to make some butterfly inserts to reinforce a crack.

-- Hal, Tennessee

View dubsaloon's profile


621 posts in 1882 days

#10 posted 07-21-2011 01:36 PM

Makes my brain hurt just thinking of the possibilities. That is one big bit. Great Idea!

-- The works of evil people are not the problem. It is the "Good" people standing by and watching not speaking up. Dubsaloon

View NormG's profile


5086 posts in 2092 days

#11 posted 08-03-2011 05:52 AM

Wow, great idea, thanks foe the pics

-- Norman

View Joe Lyddon's profile

Joe Lyddon

8542 posts in 3141 days

#12 posted 11-22-2011 07:41 PM

Now, THAT’s one Super GOOD IDEA!!

Thank you very much!

That forest… keeps on getting in my way sometimes!

-- Have Fun! Joe Lyddon - Alta Loma, CA USA - Home: ... My Small Gallery:"

Have your say...

You must be signed in to post the comments.

DISCLAIMER: Any posts on LJ are posted by individuals acting in their own right and do not necessarily reflect the views of LJ. LJ will not be held liable for the actions of any user.

Latest Projects | Latest Blog Entries | Latest Forum Topics