Furniture Making Tutorials #4: Long Grain Miter with a Spline.....your cheatin 'heart.

  • Advertise with us
Blog entry by BigRedKnothead posted 267 days ago 2197 reads 6 times favorited 25 comments Add to Favorites Watch
« Part 3: Mortise and Tenons- Mortising machine and Dado blade Method. Part 4 of Furniture Making Tutorials series Part 5: Installing False Drawer Fronts »

To be honest, I’m not a big fan of miter joints. They just aren’t that strong and they can be fussy. However they’re good design option….like on the corners of a blanket chest. To strengthen them, I like using a spline. A spline looks kinda cool and will help alignment during glueup.

Now some woodworkers might be able to get a two foot long spline to fit perfectly and look great on the exposed ends….but they’re better than me. So I cheat. Here’s how I do it.


I cut the 45 degee bevels on the tablesaw. Leaving the blade at 45, I set it up to make the groove for the spline. It took two passes to get the width I wanted.
You can use a scrap or test piece for these setups. Don’t use a short one. That’s dangerous. I just made the pieces extra long and test the cut on the first inch or so.


Next smooth up the saw marks on your beveled edge.

Now make some splines. I use…...wait for it…...1/4” plywood! If you think about it, a spline running long grain with the joint is wrong because the grain is weaker that way. So you could make a bunch of smaller cross grain splines like this:

Or you could just use a scrap of 1/4” plywood. The grain alternates. And it’s already uniform thickness. Notice the spline is a couple inches short of the end. We don’t want to see the ugly ply in the end.

Spline a little snug? You can plane the first layer of ply. I know, Rojo loco.

If you’ve got a snug spline, glue up should be pretty easy. It helps keep things aligned.

Cut the legs to the correct length. Don’t cut to where you hit the spline!

Now you should have something that looks like this. Even if it doesn’t line up perfect or whatever….no worries. Chisel it to a nice rectangle. One of the few times I use an 1/8” chisel.

When you have it good enough, cut ya a little hardwood spline. I know it’s not correct, but I think the end grain looks cool. I rip thin pieces like this on the bandsaw. It’s safer.
As with any square peg, dowel….whatever you want to drive in wood. Make it slightly over-sized. Use a block plane or sanding block to taper it. Add some glue The tip should barely go in, then it will expand as you drive it home(Stef). Just don’t get too carried away and split the darn thing.

Flush cut saw. ROS. Little oil. It should look like this.

Edit: Well that spline blends so well maybe I should have made it cross grain or an accent wood if I wanted to highlight it. Oh well. Maybe next time.

-- Red -- "That the powerful play goes on, and you may contribute a verse." W. Whitman

25 comments so far

View terryR's profile


3046 posts in 940 days

#1 posted 267 days ago

Thanks for the cheat, Red. It looks great to me, and much easier to glue up…

I’ll have to try that!

-- tr ...see one, do one, teach one...

View Douglas's profile


304 posts in 1191 days

#2 posted 267 days ago

And if I saw that at some furniture show or whatever, I might use my meager woodworking experience to show off to a friend and say, “nice piece, but you see that spline in there? The bozo did it wrong! The grain is running the wrong direction, and there’s no strength to it. Ha!”. And I’d be dead wrong. Nice one.

-- Douglas in Chicago -

View AnthonyReed's profile (online now)


4570 posts in 1072 days

#3 posted 267 days ago

Nice! Thank you BRK.

-- ~Tony

View BTimmons's profile


2113 posts in 1117 days

#4 posted 267 days ago

Pretty slick.

-- Brian Timmons -

View BigRedKnothead's profile (online now)


4742 posts in 614 days

#5 posted 267 days ago

Ya Douglas, you can still make the spline you see cross grain with this method. I’ve done it. But I didn’t like how it looked.
Tough call. An accent wood may be in order….but not on this project.

-- Red -- "That the powerful play goes on, and you may contribute a verse." W. Whitman

View AnthonyReed's profile (online now)


4570 posts in 1072 days

#6 posted 267 days ago

Besides the cleverness, that is a damn nice miter joint Red.

-- ~Tony

View Hammerthumb's profile


1210 posts in 607 days

#7 posted 267 days ago

Cool Red. Nice blog.

-- Paul, Las Vegas

View TopamaxSurvivor's profile


14724 posts in 2307 days

#8 posted 267 days ago

Thanks for the post. I think I need to remember this ;-)

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

View Scomel Basses's profile

Scomel Basses

157 posts in 629 days

#9 posted 267 days ago

Very nice!

View ShaneA's profile (online now)


5289 posts in 1230 days

#10 posted 267 days ago

Hmm…interesting take on this joint. I like the aesthetics of the end grain plug. Thanks

View 404 - Not Found's profile

404 - Not Found

2544 posts in 1601 days

#11 posted 267 days ago

Nice work Red, very neat.

View DIYaholic's profile (online now)


13301 posts in 1306 days

#12 posted 267 days ago

Pretty slick there!!!

If an employed technique has a twist, a different approach, or is just plain unique….
And it works….
Is it really cheating???

-- Randy-- I may not be good...but I am slow! If good things come to those who wait.... Why is procratination a bad thing?

View widdle's profile


1392 posts in 1630 days

#13 posted 267 days ago

that whole corners lookin tight..good work..

View CFrye's profile


2838 posts in 471 days

#14 posted 267 days ago

AWE-some Red!

-- God bless, Candy

View a1Jim's profile


112015 posts in 2209 days

#15 posted 267 days ago

Nice blog Red.

-- Custom furniture

showing 1 through 15 of 25 comments

Have your say...

You must be signed in to post the comments.

DISCLAIMER: Any posts on LJ are posted by individuals acting in their own right and do not necessarily reflect the views of LJ. LJ will not be held liable for the actions of any user.

Latest Projects | Latest Blog Entries | Latest Forum Topics

Latest Projects | Latest Blog Entries | Latest Forum Topics :: gardening showcase