- [Instructor] When working with SolidWorks drawings,
we need to make sure we're choosing
the correct projection style.
Now, what we're looking here at the screen
is what's called a third angle projection.
Now, if you're in the US,
most of the time we do use a third angle projection style,
but if you're pretty much anywhere else in the world,
they use the first angle projection.
So it's a very subtle difference between the two,
but if you're looking at a drawing
expecting it to be a certain way,
it's very easy to get confused
if you're looking at a first angle projection
and you're expecting a third angle projection.
Well, let me show you what a third angle projection is
and then we'll compare that to a first angle projection,
and you can see why it's such a common mistake.
So the way I was taught this originally
was if you had a big mixing bowl,
and you put your part in the bottom of the mixing bowl.
And you took that part and you kind of slid it
up the side of the bowl,
that the view you'd get over here on the side
would be this view here.
Same thing if you were to take that same part
and create another projection.
So I'm going to go over here to Drawing, Projected View
and take that same part and slid it up the bowl
on this side, you'd get that projection.
So let's go ahead and take a look at the part itself.
So click on the part, open the part
and let's go ahead and just make sure
we're looking at the part correctly.
So here's our part.
And you can see here, I've got this front view here.
And then if I flip over to the side,
I've got this one with this little hexagon,
and I got a triangle at the top.
All right, so that's what the part looks like in 3D.
Now let's head back over to the drawing.
And so here's that front view.
Here's the side view and the top view.
This is a third angle projection, right?
And a lot of times drawings actually will say
which style of projection they're using
down here in the block.
This title block doesn't happen to have that.
So you do want to make sure you're aware
of the system that they are using.
So let's go ahead and switch over to first angle projection,
and I'll show you how the drawing changes.
But before we do that,
let's go ahead and add a couple extra projections.
So over here I'm going to click... oop, not that one.
Let's start from that view there, Projected View.
And here's the view here with nothing on it
and then same thing down here.
One more time, projection view, a blank view.
Okay, so those are all the different views we have
of our part in third angle.
Now right-click anywhere in the gray area.
Come over here to Properties.
If you don't see Properties, click over here
on the drop down, grab Properties.
And notice it's third angle projection.
If I switch over to first angle projection,
apply the changes, notice everything changes, right?
So now instead of having that hexagon here,
it's over here on this side.
Instead of having the triangle here at the top,
it's now here at the bottom, so it's exactly the same part,
it's just how we're looking at it.
And with first angle projection, instead of having
a mixing bowl with your part in the bottom,
it's a mixing bowl turned upside down,
and you have that part.
Now you're rolling that part down the different faces.
And what you're seeing is the first angle projection.
So just keep in mind how that is done
and just be aware that different places
in the world use the different projection styles.
And so if you're seeing a drawing
and it doesn't totally make sense, you're probably looking
at a first angle of projection versus a third angle
or a third angle when you're expecting a first angle.