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Leigh FMT Pro Frame Mortise and Tenon Jig

Cut indestructible mortise and tenon joints with absolute precision. Can create tiny tenons less than 1/4" wide—you have to see it to believe it.
Item #
98% of 100
If you can use a plunge router, you can cut strong, perfectly fitting mortise and tenon joints in no time. Easily rout single, double, twin, quadruple or even triple mortise and tenon joints, plus angled and compound-angled joints, in stock up to 3" x 5". Virtually any plunge router will fit and still be available in seconds for other uses.

Nothing provides matching joint halves with the ease and accuracy of the new Leigh FMT! Named one of Workbench Magazine's Top 10 Innovative Tools of 2004, the FMT Jig allows you to rout both parts of the joint with just one joint guide, one router bit and one jig setup. Make perfect joints for everything from match-stick frames and miniature tables (rout joints smaller than 1/4" - so tiny they're almost beyond belief!) to full-size chairs and 6-foot garden gates.

  • It's remarkably easy to set up perfectly aligned multiple mortises and tenons on the FMT. Precision and repeatability are made possible by adjustable table limit stops that control the table's range of motion in both X and Y axes.
  • With each mortise or tenon position sighted and limit stops set, you're ready to rout double, quadruple, or even triple joints with the same ease and precision as a single mortise and tenon.
  • Joint tightness is infinitely adjustable by simply turning a calibrated knob; the fit is recordable and repeatable.
  • Sliding cursor provides easy alignment.
  • Bolts to a board and clamps to a bench.
  • No dedicated router is required!
  • Comes with universal sub-base that attaches to virtually all plunge routers, five 5/16" guides that will make over 20 sizes of mortise and tenon, guide stand, 5/16" spiral upcut cutter with 1/2" shank, two cam-action Speed-Clamps, outrigger bars, adjustable sidestop fence, fully illustrated user guide, screwdrivers, and mounting hardware.
  • The ACMTC Accessory Kit (#39770 - Sold Separately) includes eight 1/4" guides, four 3/8" guides, four 1/2" guides, eight-piece solid carbide spiral upcut bit set, and wood storage box.
(1) Leigh FMT Pro Frame Mortise and Tenon Jig
More Information
Brand Leigh
Manufacturer Part Number FMT PRO
Weight 27.9000
Type Mortise & Tenon
4.9 / 5.0
15 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Awesome Machine
The Leigh FMT Pro is an awesome mortise and tenon making machine. It is extremely well engineered and easy to use. I've had a Leigh dovetail machine for many years and have been impressed by the innovative and thoroughly considered design features and now I feel the same way about this machine.
January 21, 2020
1 month ago
Woodworking Experience:
leigh fmt
this is one of the coolest tools, made really well. works really good. all of leigh tools are the best you can buy. anyone thinking of getting this should do so, you will love it...
March 10, 2019
11 months ago
Woodworking Experience:
Great tool!
Perfect joints on front and back side. Very well worth the money!
User submitted image
Added Oct 24, 2018
October 24, 2018
Woodworking Experience:
I've never made a tenon & mortise joint before. After watching the video I decided to buy it. Set up was fairly simple and took less than an hour before I was making my first practice cuts. The next day I set out to build a dresser. It took over 100 separate operations to make all the pieces and they all fit together perfectly! I love my Leigh FMT Pro!
User submitted image
User submitted image
April 1, 2017
over 2 years ago
Good tool
Owned mine for over a year now and glad i made the purchase. Spent months looking at Dominos and Leigh offerings. Tried all of the tools and jigs out and decided the for the majority of projects I will build, the FMT pro was the best choice. With all tools there is a learning curve. I cut a bunch of scraps into face frame pieces and started learning how tool works. After a few days I came to a conclusion that I needed to correct a few things. First you must use a router that has a very precise and accurate plunge. PC690 did not fit that requirement. Good router, but plunge base was too sloppy. Next and the biggest item is layout. Good results come from precise layout and setup. I ended up getting a Jessem WoodSaber marking gauge and that solved that issue for me. The router I found that worked perfectly for me was a Makita RP2301Fc. Last is wood prep. As will all projects, your wood must be square and parallel on all faces. Cannot find anything really bad to say about this jig. Manual is great and new video is a winner. Would i make this purchase again, yes. would i recommend to a freind, yes
January 8, 2017
Woodworking Experience:
best tool ever for the weekend warrior!!!
If your like me don't like reading manuals and just watch the dvd. and try and remember everything, only to learn more from all my mistakes than any manual can teach. well you have a learning curve of about 4 hours. then you will be pro. perfect repeat ability and flush joints. recommended to any one that wants to spend the the money on a quality tool!
November 13, 2016
over 3 years ago
Woodworking Experience:
Leigh FMT Pro Frame Mortise and Tenon Jig
Utterly well built and precise.
September 17, 2016
over 4 years ago
Woodworking Experience:
Was hesitant about the price,however as a woodworker the pro gives me many choices and advanages,easy to use and out of the box I could make a perfect mortise and tenon.
April 7, 2016
over 3 years ago
Very nice product. Setup is tedious...
Very nice product. Setup is tedious but not hard the first time. Once you have your router "mated" with the jig this is a lot of fun. This thing takes the inexperience out of the equation. As long as you follow directions you will make some very nice joints. I would make a reference block and as you get guides make a mortise and tenon and mark it with guide size and bit size. This makes it a lot easier if you are building a project that requires several different sizes.
April 1, 2012
Happy with the product, arrived in...
Happy with the product, arrived in two days, spend the extra do it right!
October 1, 2011
Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 7 questions Browse 7 questions and 17 answers
Why did you choose this?
Rockler Store
from all of the reviews, sounds like a really good tool.
Robbi T on Feb 16, 2019
Making several Mortise and Tenon joints for a couple of bed frames
Clinton W on Apr 26, 2018
from all of the reviews, sounds like a really good tool.
Robbi T on Feb 16, 2019
Like the features and solid, accurate quality of the tool.
Dennis M on Jan 29, 2019
Making several Mortise and Tenon joints for a couple of bed frames
Clinton W on Apr 26, 2018
I'm in the habit of buying quality over quantity. after much research I've decided on this model and sure hope it serves me well for years to come.
benjamin g on Mar 1, 2018
My husband wants it. Anniversary gift.
Jane W on May 15, 2017
Great reviews.
Armando T on Apr 28, 2017
A lot of great web reviews. Also seems to be very versatile.
James M on Dec 25, 2016
I did not know this product
quality item will enhance <br />the quality of my work
steven c on Jul 12, 2016
For large timber joinery.
R-LT COL THOMAS L on Jan 1, 2016
Leigh tools are incomparable !! The Best<br />Have no more superlatives...
Jacques S on Aug 4, 2015
Like the features and solid, accurate quality of the tool.
Dennis M on Jan 29, 2019
I'm in the habit of buying quality over quantity. after much research I've decided on this model and sure hope it serves me well for years to come.
benjamin g on Mar 1, 2018
Will it work on large lumber like a 2×4 mortise in wide side?
Glenn B on Mar 16, 2016
Does anyone have any experience using this jig to cut mortises in curved pieces? If so, was it difficult to set up this jig do so?
A M on Apr 25, 2015
BEST ANSWER: joinery is preferably cut into pieces before curves are cut into them. Layout the piece including curves and joinery on square stock and cut joinery first and curves second.
will this jig work with festool routers?
David M on Feb 9, 2016
BEST ANSWER: Have the large Festool plunge router on mine. Fits perfectly.
Is this a usable set for the Leigh FMT Pro or do i need to go spiral?
Bjorn113 on Feb 22, 2016
Leigh FMT Pro Frame Mortise and Tenon Jig
Leigh FMT Pro Frame Mortise and Tenon Jig
Rockler 4-Pc. Straight Bit Set - 1/2
Rockler 4-Pc. Straight Bit Set - 1/2" Shank
BEST ANSWER: Leigh recommends up-spiral bits for this jig. The jig itself and the whole system of guides is designed to be used with up-spiral bits. I have several sizes and they work great. The mortises are made with the opening facing up, so you really need the dust and wood shavings to go up & out. With a straight bit I would anticipate a lot of smoke, burning, and possibly a stalled-out router.
Is the length of your workpiece limited by the height of your workbench?
David G on Aug 30, 2016
BEST ANSWER: The FMT pro is a fantastic jig. Highly accurate and pretty easy to use once you get the hang of it. But, yes, workbench height from the floor limits the length of your workpiece. For example, when joining a table apron to a table leg you won't have an issue with the mortise in the leg, since it oriented horizontally, but if the apron is longer than the workbench is high you won't be able to make the tenon. You can gain a few inches by securing the jig to a few pieces of wood on top of your workbench, obviously, but if you are working with an apron from a 6 foot long dining table it's going to be a problem. I would certainly buy this jig again, but now I also own a festool domino and a hybrid pantorouter - both of which can be used with workpieces in the horizontal orientation.
Is it able to work easily on the ends of longer boards ?
James Z on Jun 27, 2019
BEST ANSWER: We haven’t tried boards longer than 40” inches long, but I would guess you would prob need additional support at the non working end of your project, as the clamps are good,but can only hold so much weight.
will this jig cut mortise & Tenons on round stock?
Dewayne M on Jan 19, 2018
BEST ANSWER: You should call the customer service team at Leigh. They are very good to work with. But yes, if you can clamp the wood piece into the correct position you can even cut M&T into match sticks.
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