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Adjustable Table Saw Tenoning Jig

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Project by Jeff posted 2694 days ago 12168 views 27 times favorited 22 comments Add to Favorites Watch

This design is from the Working with Tablesaws book from the “New Best of Fine Woodworking” series published by the Taunton Press. At the time, I was reading article after article and books specifically about jigs and fixtures. I’m a real geek that way I guess. Maybe I should have been an engineer or something of that nature…

Anyway, this is an MDF jig and is pretty substantial due to the density and size. It is ‘micro’ adjustable by virtue of the threaded rod and crank. The other advantage is the ability to lock down the movable part of the jig to the base that slides in the TS miter gauge slot once you have it where you want it.

Lessons learned:
1) Threaded brass inserts put into MDF require the workpiece you are threading the insert into to be sandwiched tightly between two other dense materials to eliminate swelling of the MDF. Thus, the use of a scrap of Padauk. Even at that, I threaded that insert slightly off from 90 degress and had to make a slight cut with the TS on the support to put the brass insert perpendicular to the base;
2) ensure, with much attention to detail, the face of the jig is perpendicular to the base (and your TS miter slot. Otherwise your tenons will not be square to your mortise;
3) ensure your material for the miter slot insert/slides are a snug but freely moving fit;

Materials:
- 3/4” MDF
- “milkboard” or UHMW (found at Woodcraft, Rockler and other locations)
- Heavy-duty adjustable hold-down (I got mine at Rockler)
- Finely-threaded rod material
- Knob (design or your preference) and Crank handle.
- Misc nuts and washers per the design specifications

-- Jeff, St. Paul, MN





22 comments so far

View oscorner's profile

oscorner

4564 posts in 2936 days


#1 posted 2694 days ago

Have you cut any tenons with it? Pictures? It looks like a nice jig.

-- Jesus is Lord!

View Jeff's profile

Jeff

1011 posts in 2719 days


#2 posted 2694 days ago

Hey, Os. No, I have not yet cut any ‘real’ tenons other than a few test sticks which seemed ok in my estimation. I built it for a project I have in the wings. It will get some serious trial and error for the Thorsen table though. I’ll post follow-ups when I do. (If the weather would just get out of the teens… Darn MN winter/spring.)

-- Jeff, St. Paul, MN

View WayneC's profile

WayneC

12260 posts in 2722 days


#3 posted 2694 days ago

Looks great. You could always move your shop to California. 70s and 80s here this week.

: ^ )

-- We must guard our enthusiasm as we would our life - James Krenov

View jpw1995's profile

jpw1995

373 posts in 2923 days


#4 posted 2694 days ago

As an engineer and reader of all books having to do with jigs and fixtures I am completely offended by that remark…. truth hurts I guess. LOL Now I’m going to the shop to build this jig. :)

-- JP, Shelbyville, KY

View dennis mitchell's profile

dennis mitchell

3994 posts in 2939 days


#5 posted 2693 days ago

looks pretty fancy!

View Chip's profile

Chip

1904 posts in 2718 days


#6 posted 2693 days ago

Unlike a lot of woodworkers, I love making jigs almost as much as I like doing the actual pieces. This is a real beaut Jeff. Thanks for letting us take a look.

-- Better to say nothing and be thought the fool... then to speak and erase all doubt!

View Jeff's profile

Jeff

1011 posts in 2719 days


#7 posted 2692 days ago

Wayne, can’t you just send some of that our way? Share the wealth, man! What’s worse is that yesterday and today there is not a cloud in the sky and it’s all of 20 with a wind chill of 6…

Wanye, I LOVE the jigs and fixtures. I guess it just appeals to me to “making something to make something else” which seems really counter productive at first but if it makes my life simpler later, I’m all for it.

-- Jeff, St. Paul, MN

View jockmike2's profile

jockmike2

10635 posts in 2872 days


#8 posted 2690 days ago

Looks good, wish I had those prints, in fact maybe I do. I’m a jig geek myself. jockmike

-- (You just have to please the man in the Mirror) Mike from Michigan -

View woodspar's profile

woodspar

710 posts in 2725 days


#9 posted 2690 days ago

Did you have to do this? I was all set to go out and buy the Delta tenoning jig; now I’ll need to reconsider and maybe make my own… :-)

-- John

View Jeff's profile

Jeff

1011 posts in 2719 days


#10 posted 2689 days ago

Ha! Sorry ‘bout that, woodspar. Funny you should say that. The guy who wrote the article said the exact same thing. I can’t remember materials cost exactly, but I seem to remember the hold-down being the most expensive part (other than my labor). I can’t gaurantee it’s more accurate than the Delta but I’m sure it was cheaper…

Thanks for the nod, jockmike2. Since it was in one of Taunton’s compilation books, I’m sure you may have it in one of your FWW issues from the past (if you subscribe). I’ll check it out and see if they reference and article number.

-- Jeff, St. Paul, MN

View Dick, & Barb Cain's profile

Dick, & Barb Cain

8693 posts in 2924 days


#11 posted 2689 days ago

Very nice setup. I made one a little different than yours. I’ll have to take some images, & show it.
If you look around there’s lot of different versions.

-- -** You are never to old to set another goal or to dream a new dream ****************** Dick, & Barb Cain, Hibbing, MN. http://www.woodcarvingillustrated.com/gallery/member.php?uid=3627&protype=1

View Jeff's profile

Jeff

1011 posts in 2719 days


#12 posted 2689 days ago

Thanks, Dick. I have seen several, you’re right. Looking forward to the pics or yours and compare notes.

-- Jeff, St. Paul, MN

View lclashley's profile

lclashley

244 posts in 2739 days


#13 posted 2685 days ago

Nice looking jig. I made a simple and crude tenoning jig that rode on my TS fence. It worked OK, but it lacked micro-adjustment, which you really need for making tenons.

View Dick, & Barb Cain's profile

Dick, & Barb Cain

8693 posts in 2924 days


#14 posted 2683 days ago

Hi ,
I posted my jig on the forum. Take a look.

-- -** You are never to old to set another goal or to dream a new dream ****************** Dick, & Barb Cain, Hibbing, MN. http://www.woodcarvingillustrated.com/gallery/member.php?uid=3627&protype=1

View WayneC's profile

WayneC

12260 posts in 2722 days


#15 posted 2683 days ago

I just punted and purchased a Delta jig when I purchased my saw. I really like Dick’s sliding attachment for his saw and how he used his Jig with it.

-- We must guard our enthusiasm as we would our life - James Krenov

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