How To Join Oak Kitchen Worktops (Mason's Mitre) | Easy Step By Step Guide

Repair house
9 followers
1 Video View·Nov 5, 2026
AI Generated·May contain errors
Video Summary
AI GeneratedThis video provides a comprehensive tutorial on creating a professional mason's miter joint for countertops using a Trend jig and a router. The process covers everything from initial marking and routing the male and female joints to final assembly with bolts and glue for a seamless, structural finish.
Today I'm going to be showing you guys
at home how to do your very own mason's miter.
Right so now that we've got our second piece
of top cut we've took ourself a little bit of off cut
a bit of scrap which is the same size
and we're just going to lay it across the base there and
that's just going to allow us to sit the second piece on top.
So just as this one we've set this
one square to the front of the units
and what we need to do is mark where the two tops or the two
Two countertops intersect, so for us that's going to be here.
So we're just going to put
a pencil mark right between the two counters there.
This is a jig from Trend. Mason's Miter is this here
and what that basically does is that's going
to put us a join that comes up and along.
and then the next piece we'll have
the male version of that that will slide in
and we bolt it together so you're going to need yourself
a jig like this we're also going to need
ourselves a half inch router with a 12.7 millimeter flute cutter
and a 30 mil guide bush
so that's that there and a couple of clamps
so now that we've got our mark we need to add
a little measurement that we take from our router
which is from the outside of our bush to the edge
of the cutter so we've measured ours
and it's come up at nine millimeters so what we're going to do
we're going to add that nine millimeters we're going
to come away from our edge nine millimeters
and put ourselves another pencil line so ours is here
so we've got a nine millimeter difference
right there so we bring our jig
and if you look at these trend jigs we've got pins
And on the top we have an F90 and an M90.
F90 female 90 joint so this is going to be going
into the worktop so that's female side
so we're going to put our pins in the F90 one two and three
slide that forward drop our pins in and as we slide
this along we're gonna slide the jig up until
The jig hits our second line. So we're right on that now.
So all we need to do is clamp this in
place. Don't be using it without clamps.
We want this to never ever move while we're using it.
So we're just going to use these Bessie clamps,
making sure that we're still tight
and we're still on our mark.
Right, so don't rush this process. Double check,
triple check, quadruple check.
This is super important that this is in the correct position.
So double check all your pins are touching the front.
which ours are, our clamps are tight it's not going to go anywhere
and we're bam on our mark
that we made the nine millimeter difference right
so the reason we do that spacing is because when
these cut they don't actually cut to the edge
of the guide the guide bush keeps this that distance
away so when we plunge down we're going
to be cutting exactly on the mark that we made earlier
with our other countertop right
so one last check before we plug this in and start routing make sure
All our pins are low and nothing's going
to get caught but we're all good.
Double check before you plug it in and now we're ready
to plug it in and the way we're
going to be doing this is we're going
to be making multiple passes so we're not going to
try and cut through all of this at once.
We're going to make a very shallow pass and that's
just going to keep a nice clean edge on the top
and then we'll start dropping in 10-15 mil cuts
at a time until we're all the way through
and another tip we're going to be keeping it
on the close edge so we're going to be keeping it tight
because as you can see there's just a
little bit of slack in these jigs
so we're going to be keeping it tight to us until the last pass
and then we're going to go tight to the very back
and that's just going to give us a nice
clean cut all the way through. Let's get this plugged in.
Depending on your router there's a
couple of ways you can do this so our router you plunge down
to your required depth and there's a
lock on the side and that's going to hold it into our first position
and a lot of routers now
They have this step so you can step it down
in increments without adjusting anything so it's got
a stop on the side so as we plunge our first cut we lock it off
and then as we come through
for our next passes we just adjust this stop here
and it'll go deeper and deeper or you can
just leave this off and adjust it by eye roughly 10
to 15 mil increments that's what we're going
So we're going to do our first pass now around
Three to five millimeters remembering as we
do our first few passes we're going to be favoring
this front edge towards me.
Right so now that we've done our scoring pass,
our shallow pass, we're now going to drop it 10
to 15 millimeters. One thing to note I'm cutting in at the face first
and coming around and out
while the cutter's spinning clockwise
because that's going to give us the cleanest edge and
we're not going to have any breakout if we come in from the faces.
That's why we've set the jig
up like this so when we do the opposite one we'll actually
be cutting on the underside.
So let's get these cuts made.
Right so we've done our multiple cuts we've now got around
Five millimeters of top left so we're going to go all the way through
and now we're going to favor
the back edge we're going to be pushing against the jig
and that should leave us with a nice
clean finish. Right
so as you can see we've got our mason's miter now and the difference
between our original mark and the mark we made now becomes clear
so we finished on our original mark
and that was the nine millimeters we added for our bushing over there.
So this is the first one, the female, so now we're going to go and
mark out and get ready to do our male.
Right, so now that we've got this section
of countertop back in, we've got ourselves some scrap underneath,
we're going to slide our second part up over the top into position.
Making sure we're nice and flat.
So we've lined up the corner and we're going to take a very sharp
pencil and we're going to mark the underside of our next piece
and that's going to give us the
location of our miter. Right
so we've got our countertop outside this one is now upside down so
this is the underside so what we've done is we've flipped our jig
and what we're looking for is an
M90 so we've put our pins on the M90
and we've also made ourselves some marks.
for that nine mil difference that we've got on our guide bush.
Exactly the same with the other one.
Just we're all upside down now.
The only difference is what I've done with this jig
is I've put myself some pilot holes in here
and I'm going to put some screws through the jig
into the waste piece that we'll be cutting off
and that's going to prevent it from snapping
and damaging the underside which is now the top.
Right, so our jig is all set, it's clamped,
it's secure, it's not going to go anywhere
and if you want you can just double check
by plunging your router down with it switched off
and you can just see that that cutter
It's touching our original scribe line
so we've set our jig correctly. We're going to come back to
the start and start making our multiple passes all the way through
and then leave a nice shallow
section at the face because that is the top of this one
and we want to really look after it.
Well that's it we've worked our way through most
of the material so now it's time for our
final pass. We're going to be nice
and gentle with this and take our time because obviously
Rather than that being the bottom, that is now the face, the very top.
So let's get that done.
So we can now remove the waste section that I screwed in.
That's why I do it.
So we've had nothing drop off and cause damage to the top
and we'll move the jig and check what
it's looking like. Right
so we've got our piece into position we're going to slide it up check
that our mitres are good and yep they're going
to be great once we get the bolt holes and bolted up
and glued. So before we get on with that we need to trim any excess
because we left this section
long so for us we're going to be matching the front overhang
so we'll get that cut down.
and then we'll start marking out for our bolt.
So we've measured and marked the overhang we
want left. So put our marks on,
set our track on on the top against our marks and we're just
going to score the top with a really slight cut
and now we're going to get ready to go
through full depth. The reason we put
that score cut in is it just leaves a nicer cut
on the top it prevents the chipping out of our top surface.
So we're going to slide those up
Double check we're happy with our joint
and now we need to move on to the slots for our bolts that go
underneath. So the jigs do come with a template
to put them in set places but what I like to do
I get a pencil I go underneath
and I'm going to scribe across the two pieces in the open section
of cabinet. So this is the top the smaller section upside down
and we've got the two spaces
So the two marks that...
Indicate the space underneath that's open that's close enough
to the edge that i'm going to be using that space to cut our slots
So if we take our jig
and we're going to place our pins into the B slots
and all i'm going to do i'm going to line
the edge of this left one up cut that out
and then i'm going to move to the edge of this side
cut this one out and then i'm going to put one in the center
and i'm going to do exactly the same on
that side so let's get this clamp down and cut
so like the joint we're going to do this in a couple
of passes and we're going to set this to 20 mil
which is halfway so what i've done i've just put
myself a little pencil line at 20 mil half the depth
of the counter itself and we're just gonna
follow the guide bush again
so that's what we're looking for that's the pocket we need so i'm going
to do the rest just remember the most important part
of this is one the depth we need to be at
least sort of halfway
and two they need to match from one side to the next that's why we drew
across the pair so let's get the rest of these done
and now we've got the opposite piece
and again we're going to go
to our marks making sure they're in the identical positions
off the smaller section and now we're going to mark out
these bolt holes. Right so our parts are in
place our bolt holes are now cut into the back the little slots
so these are the bolts we're going to
be using and what we do we take the bolt we slide it
into this plastic sleeve so once we've slid the
We've slid the black sleeve over the bolt like so.
We come to one side of our thread
And we plug it up and inside and we push that sleeve up inside tight.
Right, so now that our bolts are in place,
I've put something inside the cupboard to protect the unit
because now we're going to be applying glue
to the whole face of both of our joints.
Like so.
And if we can just use our finger or brush, if you like.
We're just going to spread that across the whole joint.
Right, now that our glue's in place,
we're going to lift our second piece.
Up and over our bolts and then slowly down into position, lining
our joint up and then what we need is a 10mm open ended spanner like
that and we're going to start tightening our bolts up from underneath.
So what we're doing as we're tightening the bolts,
we're making sure we're as flush as we can possibly get.
With oak you might not get one million percent all the way through
but we're just going to adjust
each section where each piece of bolt is so we'll get
this bit kind of tight then we'll get the back
then we'll adjust the middle
and then we'll keep clamping until the two pieces pull nice and tight
and if you follow all of those steps you should end up
with a lovely miter like this
and if you want to see the full install
on this kitchen go check out the video
Remember, like, comment, and subscribe.
Peace.
