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Mortice Jig for loose tenon joinery

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Project by tdv posted 1293 days ago 7826 views 65 times favorited 24 comments Add to Favorites Watch

Hi Friends I have been building (amongst other things) a desk for my daughter-in-law (will post tomorrow) I have since joining Lumberjocks become a fan of loose tenon joinery so I found a jig on the site made by Sawdustonmyshoulder
But after sending him a couple of PM’s without reply (anyone know where he is?) I decided to guess dimensions myself & have a go this is what I came up with it is slightly different but works in the same way. I used Kreg tee track & mitre track but made the stops from some 1/2” poly prop sheet I had lying around. Sawdust did a great video on using it very informative check it out. I used a deWalt 625 plunge router (removed for clarity) & I have to say it’s a great jig. This site is a great reference library, If anyone wants to build one I can save them some time with measurements etc. I have a commercially madeTrend mortice & tenon jig (a cheaper version of the Leigh MT) but capacity is limited, this however will handle most things I’m liable to throw at it. Hope you like it & build one
Best regards to you all
Trevor

-- God created wood that we may create. Trevor East Yorkshire UK





24 comments so far

View degoose's profile

degoose

6978 posts in 1957 days


#1 posted 1293 days ago

I have the Leigh FMT and have just made 22 cabinet doors works like a dream..

-- Drink twice... and don't bother to cut... @ lazylarrywoodworks.com.au For lovers of all things timber...

View Sodabowski's profile

Sodabowski

2002 posts in 1436 days


#2 posted 1293 days ago

Hi Trevor, very nice job on the jig! How about showing us what it can actually do? :)

-- Holy scrap Barkman!

View mafe's profile

mafe

9456 posts in 1692 days


#3 posted 1293 days ago

Hi Trevor,
It’s really well made. I love it. When I get to work on mine, I will look at this one for inspiration.
Best thoughts,
Mads

-- Mad F, the fanatical rhykenologist and vintage architect. Democraticwoodworking.

View Eagle1's profile

Eagle1

2065 posts in 1667 days


#4 posted 1293 days ago

Nice looking jig there. Especially since it does the job.. Thanks for the post.

-- Tim, Missouri ....Inside every older person is a younger person wondering what the heck happened

View Todd Thomas 's profile

Todd Thomas

4969 posts in 2051 days


#5 posted 1293 days ago

looks good….well done…i may have to make me one of these…

-- Todd, Oak Ridge, TN, Hello my name is Todd and I'm a Toolholic, I bought my last tool 10 days, no 4 days, oh heck I bought a tool on the way here! †

View SPalm's profile

SPalm

4760 posts in 2485 days


#6 posted 1293 days ago

Wow. Nice build. I like it.
Favorited.

Steve

-- -- I'm no rocket surgeon

View Maveric777's profile

Maveric777

2687 posts in 1679 days


#7 posted 1293 days ago

Wow Trevor! Now that is sweet! Looks like you have yourself one well built Cadillac of a mortise jig….

Very cool and well done!

-- Dan ~ Texarkana, Tx.

View ratchet's profile

ratchet

1283 posts in 2390 days


#8 posted 1293 days ago

Sweet jig! Nicely executed. Looks like it will make highly functional loose tenons. So exactly how will it put a mortise in the end of a long (like 6’) stretcher? This is the same problem I’m having with the one I built. I may have to build a portable mini version for extra long items like workbench stretchers.
Thanks for sharing your work with us.

View nobuckle's profile

nobuckle

1120 posts in 1364 days


#9 posted 1293 days ago

Nice work Trevor. I’ve not considered using loose tenon joinery before simply because I have no way of holding the material. Your jig would solve that issue for me. May I take you up on your offer for the dimensions? Thanks for the post.

-- Doug - Make an effort to live by the slogan "We try harder"

View Schwieb's profile

Schwieb

1482 posts in 2064 days


#10 posted 1293 days ago

Hi Trevor, I love seeing well made jigs and fixtures. These extrusions available now for the tracks and the knobs and handles make it so nice to make things like this. I’m spending this morning making some fixtures based on a book by Yeung Chan, “Classic Joints with Power Tools”. This is a great little reference book that I think Mads made mention of before. I confess, I know almost nothing about “loose tenon joinery” but there’s nothing wrong with learning a new way to do joinery. I’ll have to check it out. Good work, man. I appreciate it very much.

-- Dr. Ken, Florida - Durch harte arbeit werden Träume wahr.

View tdv's profile

tdv

1114 posts in 1673 days


#11 posted 1293 days ago

Thanks guys as I said if anyone needs measurements or info let me know

Ratchet
It is mountable on any work surface just a couple of clamps, it cuts about 9” above the mounting surface & I built a router station (see post) which is 4’ 6” so I could do a 5’ rail end or pack it up on a temporary box to achieve 6’ I guess

Ken
The thing I like about loose tenons is that the router bit cuts the same every time, All the rails are simply cut to length without allowing for the tenons & you mill up your own tenon stock through the thicknesser
and get the perfect fit & if you make a mistake with the tenon you just throw it away & make a new one instead of scrapping the rail or messing around having to glue veneers to the cheeks. As Larry (degoose) said the FMT is brilliant but very expensive & this will cover the same tasks even angled

all the best
Trevor

-- God created wood that we may create. Trevor East Yorkshire UK

View Sawdustonmyshoulder's profile

Sawdustonmyshoulder

251 posts in 2231 days


#12 posted 1293 days ago

Say, tdv, your jig looks good. I really like the clear plate for the router. You can really see what your doing under there and the plastics stops look good too. I used mostly scrapes and parts I had around the shop so mine looks like the “Mad Max” version. 8^)

Do you incorporate the hold-down for routing the side-grain?

Ratchet, for a 6 foot stretcher, I would go with a convention tenon or get a tall bench and ladder set-up.

Jig Projects: First posting ———— Second posting

Jig Video is here.

-- Makin' Sawdust!!!

View tdv's profile

tdv

1114 posts in 1673 days


#13 posted 1293 days ago

Why thankyou I’ll definitely take that as a compliment. I also used up scraps for mine I was lucky & found some thick poly sheet for the stops & offcuts of track from a previous jig & yes I did make a hold down for the side tenons but I borrowed the knob off my drill press table & put it back when I was finished I’ll have to get another. Good luck with the house build by the way, If you have any morticing to do let me know I’ll bring my jig over & we can do them 2 at a time
Best
Trevor

-- God created wood that we may create. Trevor East Yorkshire UK

View lanwater's profile

lanwater

3075 posts in 1537 days


#14 posted 1293 days ago

Great Jig Trevor!

From the video it seems to make easy to cut those loose tennon.

Thanks for sharing!

-- Abbas, Castro Valley, CA

View TopamaxSurvivor's profile

TopamaxSurvivor

14612 posts in 2279 days


#15 posted 1292 days ago

Nice work. Looks like the way to go if you have a lot of mortises to do.

-- "some old things are lovely, warm still with life ... of the forgotten men who made them." - D.H. Lawrence

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