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TWO BLADE TENON JIG

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Project by kiefer posted 05-07-2014 08:17 PM 2724 views 16 times favorited 18 comments Add to Favorites Watch

This tennon jig is really not different that others of this type but by using two blades to cut both sides of the tennon in one operation makes it easier and saves time and eliminates the process of having to flip the work piece or resetting the jig for the second cut .
This is not a new idea as my uncle did this on a shaper some fifty years ago and I have read about this method in books .
The jig is constructed to slide on the fence with as little play as possible and a handle that keeps my hand well away from the blades . The work piece is held in place by a toggle clamp and aligned by the tall fence and a back stop which both have to be perfectly set a right angle to the saw table .
I use a 1/4 ” box joint blade to cut the dado first and then set up the two 7 1/4” blades with a spacer and shims in between to match the tennon to the dado .
I use the 7 /14” blades because of the low price and can set it up once to the perfect fit and put it away for the next time I need it .



After I cut all the dados I set up the blades for the tennon cutting and align the jig with the work piece clamped in place to the dado for the length of the tennon by using the dadoed work piece as a hight gage
and visualy align the tennon position
This is done without the saw running and unplugged from power (Safety First )
A couple of test cuts and the alignment is perfect .
The waste that remains is cut on my sled with a stop block .

Here is the result of the first test and it turned out very well nice and flush and square and now I can make the doors for my daughters bathroom cabinets .

-- Kiefer 松





18 comments so far

View Jim Jakosh's profile

Jim Jakosh

11477 posts in 1761 days


#1 posted 05-07-2014 08:51 PM

Very nice sturdy jig, Kiefer. I love it. I had been thing about making one but I don’t cut too may tenons on the table saw. Thanks for sharing. I may have to make one of them some time too!!..............................Jim

-- Jim Jakosh.....Practical Wood Products...........Learn something new every day!! Variety is the Spice of Life!!

View tyvekboy's profile

tyvekboy

567 posts in 1669 days


#2 posted 05-07-2014 09:07 PM

Great idea Kiefer.

Did you use a circle cutter for the wooden spacer or did you turn it on a lathe?
Was the wooden spacer solid wood or plywood?

Where did the brass looking spacers come from?

-- Tyvekboy -- Marietta, GA

View kiefer's profile

kiefer

3077 posts in 1322 days


#3 posted 05-07-2014 09:17 PM

tyvekboy/Alex
Hi Alex
The wood looking spacer is made from laminate flooring (nice and hard ) and cut out on the band saw and the shims are from an old dado set ,the silver washers are saw blade stabilizers from Dimar which I like using with all my blades when possible especially thin kerf blades .

-- Kiefer 松

View hoss12992's profile

hoss12992

2752 posts in 548 days


#4 posted 05-07-2014 09:35 PM

Cool jig, great job buddy

-- The Old Rednek Workshop https://www.facebook.com/theoldrednekworkshoptn

View HillbillyShooter's profile

HillbillyShooter

4598 posts in 948 days


#5 posted 05-07-2014 11:49 PM

Great idea—I particularly like your use of low cost 7-1/4” blades so you can set them up once and leave them set up for the next time. Innovative as always!

-- John C. -- "Firearms are second only to the Constitution in importance; they are the peoples' liberty's teeth." George Washington

View Mark's profile

Mark

425 posts in 630 days


#6 posted 05-08-2014 12:12 AM

Very cool idea Kiefer. Well done.

-- Mark

View DocSavage45's profile

DocSavage45

5005 posts in 1498 days


#7 posted 05-08-2014 12:52 AM

kiefer,

Keep on creating!

-- Cau Haus Designs, Thomas J. Tieffenbacher

View steve_in_ohio's profile

steve_in_ohio

1090 posts in 266 days


#8 posted 05-08-2014 12:55 AM

great idea

-- steve, simple and effective woodworking---

View Mauricio's profile

Mauricio

6819 posts in 1807 days


#9 posted 05-08-2014 02:51 AM

pretty cool.

-- Mauricio - Woodstock, GA - "Confusion is the Womb of Learning, with utter conviction being it's Tomb" Prof. T.O. Nitsch

View Rick M.'s profile

Rick M.

3974 posts in 1036 days


#10 posted 05-08-2014 04:11 AM

Considered this many times but I don’t really cut enough tenons as a hobbyist to bother. Nice to know it works.

-- |Statistics show that 100% of people bitten by a snake were close to it.|

View stefang's profile

stefang

13044 posts in 1990 days


#11 posted 05-08-2014 07:51 AM

Your jig certainly works well Klaus and it’s a pretty simple set-up too.

-- Mike, an American living in Norway.

View doitforfun's profile

doitforfun

154 posts in 263 days


#12 posted 05-08-2014 10:32 AM

I just finished building a tenon jig last night based on LJ thetinman’s design. The toggle clamp is a great idea. I’m going to add that to mine.

-- Brian in Wantagh, NY

View jbschutz's profile

jbschutz

389 posts in 1347 days


#13 posted 05-08-2014 02:16 PM

So much to like about this jig and setup. Best of all…..it is consistent, once you have it tuned.
Great build Kiefer!

-- jbschutz www.johnschutz.com

View TechTeacher04's profile

TechTeacher04

172 posts in 187 days


#14 posted 05-08-2014 05:29 PM

I have always thought of trying that but was concerned that the spacer might not survive. I guess I am overly cautious.

View Jerry's profile

Jerry

553 posts in 304 days


#15 posted 05-08-2014 07:00 PM

Very clever, I like this!

-- I have always wished that my computer would be as easy to use as my telephone. My wish has come true. I no longer know how to use my telephone.

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