actually i really enjoy working with steel conduit so i'm going to show you how to bend this
really accurately to a 90 degree we've had a lot of GSH electrical videos where i've actually
been to piece of steel conduit so what's going to make your video unique Joe well hopefully
what i'm going to be able to do is show you how to put a bend into a piece of conduit a
right angle bend like we've got here but do it so accurately that you can actually put the bend in
uh with the fixed measurement here and actually get it to exactly the value that you want it
to be so good example being so if i had the the back of the conduit measurement to the finished
thread position so 300 mil yeah you're telling me you'll be able to put an exact bend in at 300
to the point where it won't actually need cutting down afterwards okay i
think if we bring the camera in we'll say and do that so then Joe we're over at the conduit
bending machine i can see one of the end of the conduit has got a thread on it and one end hasn't
which ended we're going to be working from so we're going to be working from the threaded end
so this is going to be our fixed reference point we're going to measure from here and hopefully
when we've finished and we measure it after we put the bend in that's where we'll measure from
so we want the distance from the end of this threaded end to the back of the conduit bend to
be 300 millimetres exactly okay so is that going to be the first measurement that you make there
so yep so i'm going to measure 300 mil from the threaded end down to here so just get
300 mil on there which is just there so that's my 300 millimetre mark nicely done so then Joe
are you telling me from the end of the thread to the back of the bend is the mark that you've made
now that's 300 yep and that's the one you're going to put into the conduit bending machine absolutely
so what i want is i want my conduit once it's been bent i want the back of this piece of tube here
to be level with that mark there at 300 mil going down there so now what i've got to do
is put it into the conduit bending machine in the right way so if i just i won't use the handle for
the time being just to illustrate the point of what i'm trying to do so i've got my stop up and
in the right position i've got my conduit in the former and that's ready to go and now what i've
got to do is try and figure out where the back of this bend will be after i've bent it so what i
need to do here is use a scrap piece of conduit and if i plunk this into the former like that
you can see that that represents what the end of the conduit will look like once it's been bent
after the bending has been taken place so what i need to do is line up this mark that i made at
300 mil with where the back edge of this piece of tube will be so i'm going to line it up just about
there now the only other critical thing i have to do here is think about the angle that i'm bending
it to because i'm bending this to 90 degrees i've got to make sure that this all lines up
when the piece of tube that i've put in is at 90 degrees so let's just have a little look at that
so i'm going to put my combi square in here
and make sure that that is nice and square so i'll get that lined up there
now you can see that that is square so the two pieces of conduit are a right angle to each other
but now what i need to do is just make sure that my mark that i've put on is in the right place
and it is so it's lined up with the back of the this piece of conduit and this piece of conduit
is at 90 degrees to this one and that's going to give me the correct position for the bend
okay Joe so if we change the position now of the camera so we can see this a little bit closer in
yeah you can just repeat that process as you go through to put your 90 degree bending beautiful
okay then Joseph we've got the arm of the conduit bending machine now upright can you just position
it as you described previously for me yeah so in bringing the arm up obviously the conduit shifted
a little bit so what i'm going to do is just push that in until that mark that i made earlier
now lines up with the back edge of the conduit when and this is critical this piece of conduit
is at 90 degrees to this piece i want that mark to line up with the back of this piece of conduit
because this piece of conduit represents where the bend will go after i've pulled the handle down so
that looks pretty good to me i'd say that's in the right position now and that's ready to bend okay
then Joe are you ready to spend i am indeed okay now this is the tricky part if you can get this to
90 degrees on the first go and you've done really well i always underestimate it so mine
is always not quite 90 degrees so i'm going to just go over just a little bit on this one so i
reckon that must be somewhere about close so i'm going to take this out and i'm going to show you
the best way of checking that this is 90 now okay Joe so i've moved the conduit away from
the conduit bending machine so you can just prove now that we're 90 degrees for us yeah absolutely
so what i'm going to do i like to use another piece of tube as a reference point it's always
useful to have a scrap piece of tube when you're bending conduit and then i've offered this
up against here just hold it tight there so that is now parallel to that piece
and by offering up my combi square you can see there that i'm not quite at 90 because there is
no gap at this end and quite a large gap down here where this remains straight you can see we need to
put a little bit more in that so i'm just going to go back over to the bender put a little bit more
bend in there and then we'll have a look at whether i've got it to 90 or not
generally speaking it's best to under bend it a little bit because it's easier to put more bend in
than it is to get bend out so i'm actually quite happy with that as a result i'll just tweak it a
little bit and hopefully get it to 90. okay then Joe so you just need what i would call a feather
tiny little bit more in there it's actually quite an irritating amount to get in that i need to do
but what i'm going to do is i'm just going to lift the arm up on the bending machine here and just
illustrate the point that this should really go back into the bender in the same way that it came
out so this is the end that we measured from and we had this sticking out over here before
so i'm going to stick it back in in the same way like that and then i just need to put a little
bit more bend in now this will surprise you how much more bend will go in without too much effort
generally speaking it just wants to be the weight of your arm that takes this down a little bit
if we if we overdo this it's it's possible but challenging
to get the bend out so let's just have a little look at that we'll just put a little bit more
and you can actually feel it go you can feel it give when it does bend sometimes you think
oh that's bent and it's not moved because what's happened is that the whole rig's just tightened up
and got to the position where it's going to start bending so you can actually feel it start to bend
when it uh when it goes so we'll take that out and see if we've got that to 90 now i love that
phrase show the weight of your arm when i shout out in the workshop you've just got to feel it
go just the weight of your arm if you're just feathering it in okay let's check that again okay
so then Joe you've feathered it in can you just prove to me it is actually at 90 degrees yep we've
got it to exactly 90 off camera i think we'll do a future video on macklin conduit when it's
not gone quite right first time we'll show you how to do bits and pops like that but if we just
look here now you can see that that is nice and close to 90 degrees there we've got that so that
bend is now at 90. and now really the aim of this whole video was to try and prove that you can put
a bend into a piece of tube at exactly the right length without having to trim it off afterwards so
hopefully this line here the front of this piece of tube represents the back of the bend because
we've just kicked it off parallel and what we'll do is if we measure from there to there we should
have that magical number of 300 mil so let's see if i've managed to bend this accurately enough
look at that 300 mil on the nose absolutely beautiful so again we've bent that really
millimetre accurate without having to trim anything off afterwards so
if you can master that skill and really it's quite simple using that simple method that we
just showed you then that really could speed up your conjugate work when you're out there
on site that's fantastic joe i think what we should do is do another video where you actually
put a second bending yeah so we have a second crucial measurement so we're actually going to
have two back of back bends again to see if you can get it using the similar technique as you
wouldn't demonstrate today i think that's a great idea and if you ever find yourself at an event a
live event where perhaps there's a challenge on where you need to do a back of ben tobacco bend
on a piece of tube maybe that'll be something that can help you out maybe even help you in a prize
audio
so then joe we hope this video has been some help
you