How to cut 120 Degree Angle
Advanced miter saw techniques (Easiest way to cut angles)
0:00 / 0:00
Quality:
Sharing buttons:
welcome to sawdust in wood this is Chris
today I'm going to teach you advanced
miter saw techniques so I've got
previous videos where I show you
formulas to to figure out angles you use
angle finder and it's normally 180 minus
the angle divided by 2 and it shows you
where to sit you might have saw 2 today
I'm going to show you a really easy way
to take any angle divided by 2 and cut
it there's no more math than that it's
just divided by 2 or you can just say I
need a 30 degree angle and just come on
the sole and put it on 30 and make your
cut but to do that you need to
understand that zero on your saw is
actually 90 it's actually a 90 degree
cut it's a right angle and I'm going to
show you a chart that's really gonna
help you understand it and then we're
gonna do two examples ok so this is how
you need to start reading your miter saw
and I put some tape on here some people
would just scratch out over these
numbers and write these numbers because
they don't even want to reference these
anymore once they learn this trick so if
90 is actually 0 5 is 85 on down the
line and 45 and 45 are true and anyone
who's ever cut to 45 in me to 90 know
what I'm talking about because you go
down further and say ok well I need an
80 degree angle and then you cut to 40s
thinking that 240 degree angles are
gonna give you a 80 degree cut but it's
really not it gives you a hundred degree
angle too cuz it's really 50 so you want
to make it a hundred degree cut when you
thought you were making a 80 degree cut
here's the first pre-built angle for
example number one y'all know how I like
to do I like to cut angles put them
together with two by fours show you the
angle and show you how to cut it on the
saw so here we go let's see what the
angle finder is showing 120 degree angle
alright all you got to do with this way
is 120 divided by 2 is 60
okay we're over to the miter saw now so
we need a sixty to sixty degree angles
to make 120 so we know zero is actually
90 we know 10 is actually 80/20 is 70
and 30 is 60 and that's our cut so we're
gonna move the miter saw over 230 right
on the money
clamp it down and that is going to be a
60 degree angle we're gonna cut two
angles right here all right so I got two
pieces of wood I'm gonna put a 60 degree
angle on this side a 60 degree angle on
this side and it's gonna make a 120
degree angle it's a nod to saengil got
my first 60 degree cut switch over to 30
let's go back to the angle we have built
and see how it matches up all right
we're back to a 120 degree angle right
here I'm gonna put the trim on the
inside because I got a screw right here
when I screw the saying all together
Scottie in the week put our first piece
in our second piece in my fits perfect
all I did was take 120 degrees divided
by 2 and I got 260 degree cuts let's
move on to our next example 50 degree
angle you knew I was gonna throw in a
hard angle to cut a lot of people have
messaged me lately and are trying to cut
stars for Christmas and they are really
struggling with making these cuts so I'm
gonna show you how to do that so 50
degree angle you need a 25 degree cut
here and a 25 degree cut here just a
vibe 50 into 2 let's get to it all right
so we're back on the salt and we need to
make 225 degree cuts to make that 50
degree angle so let's count backwards 90
remember the zero is 90 everything goes
backwards we count down as we go
backwards 90 80 70 60 50 40 I can't get
to 25 degrees on my saw the sharpest
angle I can cut is a 40 degree on this
side and a 30 degree on this side cuz
this side goes to 60 and I need a 25
degree cut all right so we established
we need a 50 degree angle divided by 2
is 25
we need 225 degree angles to make the 50
degree angle when we counted back for 90
starting at 0
we could not get to 25 so this song
cannot cut a 25 degree angle as it is
I'm gonna teach you how to make a jig on
your saw to cut acute angles it's really
easy so you come over to you song and I
have this board clamped tightly against
the fence down
that's gonna be my jig I'm gonna come
the 45 on my saw block it make this
alright and when I move this saw back to
0 or 90 should I see and this is back at
90 I'm actually cutting a 45 degree cut
I'll give you a quick example we're at 0
which is 90 this is a 45 degree cut if I
put a piece of wood right here line it
up on my jig and cut it's gonna cut 45
degrees so to get to 25 degrees all I
have to do now with this jig zero is
gonna be 45 and I'm a cow backwards so I
get to 25 45 35 25 so 20 degrees is
gonna give me a 25 degree cut with my
jigging place saw is locked down now
I'll put the camera up and make these
cuts alright so we got our jig in place
with the jig zero is 45 we counted
backwards to 20 45 minus 20 gives you 25
and we need to 25 degrees cuts so I'm
gonna cut that right here put this right
on my
125 degree cut 225 degree cuts this
should be a perfect 50 degree angle
let's go check it all right here here is
our instructional piece it's a 50 degree
angle and here the two pieces we just
cut we'll put that on hold it down I'm
holding the camera too but I hold it
that's perfect
50 degree angle cut with the jig when
you saw 50 minus 2 is 25 degrees you
make 225 degree cuts you can cut it with
no problem thanks for watching today I
hope I showed you a new way how to cut
angles there's links in the description
below to all my previous videos where I
show other ways to cut all these angles
using the miter saws numbers as they
appear this is my personal favorite way
to do it because I can just divide
whatever angle I have into to and it
gives me my cut it's really easy just to
count backwards start at zero on your
saw call that 90 and then count
backwards and if you get in a cute angle
you just make this quick and easy jig
and you can cut angles really easy
thanks for watching please subscribe
like and have a Merry Christmas
[Music]
