- [Instructor] At the start of this chapter,
we mentioned that the rear triangle
is actually a double triangle.
The parts that we've already made
are mirrored over to the opposite side
and this is something we can easily do in solid works.
Open the assembly that we'd been working on
and we're going to mirror over these three parts.
The chainstay, the seatstay
and the rear dropout.
Go to the assembly tab
and click on the dropdown
underneath linear component pattern
and select mirror components.
First, we need to select the mirror plane.
This is where the parts will be mirrored about
and this will be the right plane of the assembly.
So expand this feature tree,
select the right plane and make sure it's in that box there.
Then we need to choose what we actually want to mirror.
So click in this components to mirror
and then just click on those three parts.
So we've got the seatstay, the chainstay
and the rear dropout.
And then click on this next area.
Now we should see a set of previews
for the parts that we're going to mirror
and we can adjust how the parts are exactly mirrored.
So let's have a look at the seatstay.
So for me, mine seems to have defaulted to the correct one.
But if you look at these three options,
then three of them will obviously look wrong.
So for example, this one isn't connected at the top,
this one isn't connected at the bottom
and then this one also isn't connected at the bottom
and it's sort of back to front at the top.
So I'm going to click on this one, which looks correct.
And then we can do the same for the other parts.
So I'm going to click on the chainstay.
And you see again, the first one looks right,
this one isn't connected at the front,
neither is this one
and then this one isn't connected at the back.
So I'm going to choose that first option.
Now for the rear dropout,
we can see the second one is obviously wrong
because it's facing backwards.
This third one is upside down
and then this one is backwards and upside down.
This first one looks like it might be right.
But actually, if we look closely
we can see that raised part is pointing to the outside
and it should be pointing to the inside.
So because of the nature of the shape,
because it's not symmetrical
we can't actually mirror it directly
and get the orientation that we need.
So we actually need to create what's called
an opposite hand part.
Luckily, this is very easy in solid works.
All you have to do is click this button here
opposite hand part.
If you're using an older version of solid works,
then the layout of these menus might be slightly different
but you still looking for the option called
opposite hand part.
So now if we look at the preview
we can see that looks correct.
So when all of those previous look okay,
just press okay here on the left.
And if you get any warnings like this for the materials,
you can just press okay.
And you see that all looks good.
So let's have a look at this more closely.
So the rear dropout that looks fine.
The chainstay, that seems to be fine
and it seems to join on here at the front correctly.
And then if we look at the seatstay,
it looks fine on this end.
If we go to the top here,
I'm sure we can see that notch is the wrong way round.
And this is similar to the dropout relay.
We actually need to create
an opposite hand version for this part.
Because of the nature of the shape,
we can't directly mirror it.
So let's go and edit that mirror feature again.
So click on it here,
press edit feature
and then press next.
And let's just double check for that chainstay.
We don't have any of the other options here.
So the first one, yeah, we can see it's wrong at the top.
And again, all three of those are wrong.
So we're going to have to use an opposite hand part
which is this one.
So this just creates
a new part that's opposite to the original part
and then let's press okay.
You can press okay for the warning.
And now that all looks correct at both sides.
So we can rename that mirror feature.
That's something like rear triangle mirror
and then we can just save the assembly.