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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

Gallery

Comments

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

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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.)
 

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

: ^ )
 

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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. :)
 

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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.
 

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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.
 

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

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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… :)
 

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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.
 

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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.
 

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

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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.
 

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

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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.
 

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Wanye, there's the one advantage (other than precision machining) that your Delta has over mine and that is the ability to do angled tenons. I think I'm going to modify my plan to allow for adjusting the 'fence' of the jig if I can. That should be a nice challenge. I don't know if I can maintain a true 90 degree angle (when it's moved back to 90) if I make it adjustable but it's worth a try I suppose. I guess it would be no different than using a combo square to check the angle like you would to adjust your jointer fence.

Like I said on your post, Dick. I'm gonna snag that spring idea. ;-)
 

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Perhaps you could create reference blocks that could be installed in the Jig to set specfic angles. You could create a set of basic angles, 15, 30, 45, 90, etc.
 

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Hey, not a bad idea. Simple and effective. Thanks!.

(By the way, I fixed the typo on your name in my previous comment. Sorry about that.)
 

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Jeff, this is a nice design. I am a "geek" for jig as you put it. I sometimes feel that I spend more time building jigs than project. That said, this design is new to me. I hadn't come across the crank idea yet. I like it, but am not sure that I'd need it. I went another way with it. My jig is fixed. The table saw fence determines the tenon size. My fence is fairly easy to microadjust. I like the UHMW runner as well. MDF to MDF creates a decent bit of friction and drag.
 

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Nice jig Jeff. I found this on Google. first page.
 
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