How To Cut Large Through Mortises
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- เผยแพร่เมื่อ 8 ก.พ. 2025
- Please watch: "Making a Nakashima Inspired Live Edge Trestle Dining Table"
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In this excerpt from the Nakashima Inspired Dining Table Project I share my technique for cutting large through mortises.
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Excellent video. You are very thorough and concise. I used a moritser and was looking for a good way to show off through-tenons. This is it.
Just a slight clarification, router bit bearings are identified as if the bit is hanging in the router. "Top bearing" has the bearing close to the collet shoulder, and bottom bearing is at the end away from the router bit shaft. Nice build of the table Matt, your videos are well detailed. Thanks for sharing.
Thanks, Don!
Thanks for showing us a different way to do it. People like to complain if you don't do things the way they think you should!!!
Thanks for the positive feedback. Always many ways to do the same thing.
Thank you for sharing how you mortise thick timber, It was thanks to you and @amyaaronwilliams that I learned how to effectively and efficiently cut mortises in 4" thick timbers without breaking the bank!
I didn't quite go to teh same scale as you on making my jigs though, what I have for a workshop is very limited, but I managed to create a mortise guide/jig with my router, its guide and a pair of quality squares.
I'll DEFINITELY be adopting the same method as and when I need it in the future!
Good video. Putting together a jig seems tedious first but big mortices rarely come alone, usually there are 4-10 or the same size.
Thanks for sharing your expertise. Are you sure your clamps are large enough to hold your jig together while you glued it up? To those wondering why you didn't use a chisel to make the mortises, did they ever try to make multiple large mortises with a chisel? It is possible, very rewarding, and takes a lot of practice. Your way is the most efficient.
Thanks!
Great video, thank you for taking time to walk through step by step.
Looks great! Thanks for the explanation.
I have chopped a mortise or two but I don’t have router so I rely on some bits and good chisels.
Super good video thanks
Great video, don’t pay any attention to the haters.......Thank you for sharing.
Part of wood working is having the correct tool for the job.
Get a benchtop mortisser and save yourself the trouble.
This looks really useful! Thanks for sharing!
Hope it helped.
Great presentation I like a lot thanks.
Very cool very precise way of making those huge ass mortises Matthew!
+GuysWoodshop thank Guy! Hope it helps you in the future.
Really good over view of this Matthew.
+The ShavingWood Workshop Glad you liked it, Tommy!
easy to enjoy good content man :-)
Very well done! Thanks!
Glad you liked it!
Great video! Going to be doing this on a slab table build soon. :)
Hope the table came out great!
Still in process! Not enough shop time... :P
Wonderful stuff. Tell us about your sled.
Long and complicated way to cut a medium sized mortise. Nice watching some of the techniques though.
Awesome
+Wayne Brown thanks!
MM Wood and Studio
Nice video and very informative. Curious why the fence on the jig after it was clamped?
To create a fixed reference point from that point forward.
Liked the video. Now I'm wondering how you cut the tenons.
A dado stack. By the way, this build is a class at my online school.
Set the knife on the line,move the square to it.
Why make a jig and still cut most out manually? Get a bearing bit with plunge router and be done with it.
An edge stop would have made it easier to center the template to the part, other than that , it's a good job
Sorry MM -you lost me on this one. Listen to your viewers -the comments are right-on.
Jigs are efficient for repetition - but they're a waste of time and energy (and a source of frustration) for only a couple cuts. Jigs have to be tested on scrap - by the time you're done doing that I'd have 3-4 mortises cut by hand. For that kind of simple through-mortise the jig is for doing 20 - not 2.
Now if I had enough mortises to justify the jig and a router - then I'd use a guide collar and a long spiral bit in a plunge router. Use a downcut spiral bit and no scoring or pre-drilling required at all. I'd build the jig around an actual tenon- offset for the collar with some gauged spacing material - no measuring .
BTW - when I was young and foolish I built timberframe /post and beam structures and we had to hand cut furniture-accurate mortises in 6x6 and 8x8 timbers with limited time and limited tools. We used a port-align drill guide/ 1/2" drill, a utility knife to score the cut - and a sharp slick to dress the sides back to the line. Fast and accurate. Sometimes - no generator (this as years before reliable battery tools) - so we'd just score them and cut the whole thing with the slick if necessary.- it took a few minutes but nothing ridiculous.
Aren't you the cat's meow.
Or you could hand chisel them and (imo) get an equally good finish in less time than it takes to make the jig. Don't get me wrong, I'm all for using power tools to save time, but unless mass producing, I don't see the benefit of power tools in this project.
Thanks for the comment David. One of the reasons I do it this way is to enable people who take the class to be able to replicate what I have done.
MM Wood Studio 2
It would be more intresting to do this with an adjustable jig that can adapt to more situations. But then maybe its even more fun to build a pantorouter....
I own a Multi-Router and used it extensively when I did production work. For my online school, I use jigs that enable anyone to do the work who may not have that type of specialized equipment.
Talk about using power tools, drill some start holes and cut it out with a jigsaw or a Sawzall
Mallet, chisel, marking gauge... done.
Lets see your video.
@@Joesmith-fu4ps I don't make TH-cam videos but there are plenty here showing how to cut a mortise with chisels.
@@tomdavies6368 There is more than one way to skin a cat and yours isn't necessarily the only way. Making a template like takes about 5 minutes to cut the pieces not counting the glue dry time. Most hobby woodworker aren't in a race to get the project done. I wish there was a way for you to show us (instead of tells us) how great you are. He was showing one way to make a thorough mortise. He never said it was the only way. It is great that he tries to share new ideas with other woodworkers. It's much better that being a negative asshole like you.
@@Joesmith-fu4ps calm down mate. Was just pointing out that there's a much simpler way to do this. No need to call me an asshole. Have a beer, chill.
Sweat - I will defiantly give this a try.
+Barry Wharam sounds good!
What a novel idea, thanks for posting!
Since you are using a piece much bigger going into the mortise then you could have just screwed the jig to the working piece on the inside as the holes would be covered. Fill in with filler and no one would see it.
holly shit dude you got a lot of time on your hands, why don't you use a mortise drill? you could have done that in 5 minutes, routers to cut mortises are a pain in the rear.
Still, why not use a router right away? Use a mortising bit, have the left and right limits for the router set and off you go. I did it this way whether was through or not and it worked. Just saying ...
That's one way to approach it, but leaves a lot of room for potential mistakes, in my opinion and experience. Pushing a stop a little harder might move it etc.
Before showing us how to build jigs you could show us the jig first and how it's used. We're blind to what the pieces are for when you withhold the footage of the result until the end. We're just wondering what it even is until you're done. Just some feedback. Fight your instincts to hide the end-result for dramatic impact.
As I said in the beginning, this is an excerpt from the build video class on this project. Lots of good information in this video.
MM Wood Studio Well then in the original vid you could have shown the jig before going thru the many steps to build it. You could have edited in a shot in THIS vid. Whatever, my crit stands. Accept it and learn from it or ignore it.
Have to agree here. It's easy to make this mistake because it is natural to want to show what you made in a final reveal sort of thing. But in the case of making an instructional video about how to make a jig or piece of furniture, it helps the viewer tremendously to show the final product right from the start. That way we can follow along and understand why you are doing each thing you do. Otherwise people will simply jump to the end and then back to the beginning or watch it again to get their bearings on how and why for each step.
Or worse, not even scrub back and forth....but instead just leave. @Mm Wood Studio Dont make excuses about excerpts, just edit. Admit it, your format is prohibitive to learning.
@josephknightcom...you can lead a horse to water but you can't make him drink! People often wonder why some TH-cam channels take off with tens of thousands of subscribers while their channel languishes with no growth, but when you point out obvious issues with how they go about making their content you usually get excuses. You nailed the problem with this video and it shows with their subscriber count.
I don't know man. Was it really worth it to build such a complicated jig? In this instance it doesn't make sense for me. A beginner I think would stand a better chance going with the drill press and then the chisel. Or just an up spiral bit from the get go and then chisel to clean up. If you have to use a guide then why not just a straight edge clamped for that specific edge and then clamp for next edge. Just seems like a lot of time and work. If I were beginning I might lose interest! Still, thanks for the video!
Lol, nothing com plated about that jig. Gluing a few pieces of plywood. Show us your table.
man that is a lot of time and jiggery for something u could finish with chisels in 10 minutes, unless u are making alot of these the exact same size, that router is a huge waste of time
I wanted them to be exactly the same and most importantly, the classes I film need to be approachable. Making a jig is approachable and repeatable with similar results.
People are such dorks ffs. The jig isn't a time saver for the first one, but for the second through nth.
Not everyone has the expertise to cut mortises with a mallet and chisel. Jigs help the beginner get in the game.
M
Why do haters insist on giving there shitty opinions on how to do this job especially when it is stated at the end of the video that there are several ways to do this? The mortises look perfect. End of story.
You're wasting so much time .. Build an adjustable jig or buy one dude
Good video. You need to turn your mic sensitivity down. It's kind of annoying when all I hear is your spit sloshing around in your mouth!