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 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 mm exactly is that going to be the first measurement
that you make the 300 mil so y 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 mm mark nicely done so what
I want is I want my conduit when 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 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 uh 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 plonk 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 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° I've got to make sure that this all lines up when the piece of
tube that I've put in is at 90° 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 at 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 this this piece of conduit when this piece of conduit is at
90° 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 you can just
repeat that process as you go through to put your 90° bending so we've got the arm of the conduit
ending machine now upright can you just position it as you described previously for me yep 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° 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 pretty good to me I'd say that's in
the right position now and that's ready to bend now this is the tricky part if you can get this to
90° on the first go and you've done really well I always underestimate it so mine's always not quite
90° 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 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 uh 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 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 will surprise you how much
more bend will go in without too much effort um generally speaking it just wants to be the weight
of your arm that takes this down a little bit if we uh 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 cuz what's happened is 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 I love that phrase
Joe the weight of your arm it's one I shout out in the workshop you 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 yep we've got
it to exactly 90 off camera I think we'll uh do a future video on mackling conduit it when it's
not gone quite right first time we'll show you how to do bits and bobs like that but if
we just look here now you can see that that is nice and close to 90° there we've got that out
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 uh this line here the front of this piece of tube represents the
back of the bend cuz 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 millimeter accurate without having to trim anything off afterwards