And note that we have a pulley and a tensioner on the screen.
So, as we're looking at this, there are a few things that we need to know.
In our browser, we have a top level and you'll notice the icon, it's a large block sitting next to a small block.
This is telling us that we have multiple components inside of this file.
As we go down the line, we have Origin, Joints, Bodies and Sketches,
which is what you would see in a file that just has an individual body.
So, notice this body is at the top level.
We then have components, Pulley, which we can turn on and off,
Tensioner which is comprised of three separate components,
and then we have a second instance of the Pulley.
So, going through here, we have a few things that we want to note.
We have a body at the top level, we have an individual component,
we have a copy of that individual component, really a second instance, noted by the 1 and the 2,
and then we have this tensioner which is comprised of one, two and three separate components.
Let's take a little bit of a look at what each component is.
We expand the component, it has its own origin, it also has its own folder for bodies and sketches.
Now if we take a look at each of these individually, I want to know what happens to the timeline at the bottom.
When you activate the top level,
that's going to show all of the features and sketches for the entire design.
If instead we activate the tensioner, for example, it shows only the features and sketches associated with the tensioner component,
and if we go down a little bit farther, and let's activate just the tensioner arm,
it will show only the sketches and features associated with that.
So, this is one of the reasons why Rule #1 came about on the fusion forum.
It's a great way that you can organize your components and bodies together in common groups.
So, we know that the tensioner is essentially an assembly of the tensioner arm,
the tensioner pulley, and the bolt that holds it together.
So, when we're working with this component, if we click on it to activate it,
we then see that in the foreground and everything else becomes transparent.
We can of course control the way this is shown on the screen by going into our user preferences,
but the default setting will display the opacity at about 50% for all of the other components.
We also have the available option to see only features, sketches and other tools that are associated with just those components.
So, it's a great way to organize everything.
All right, that's enough talk, let's go ahead and play around with this a little bit,
so we can understand a little bit more about how bodies and components work.
Go ahead and hide your data panel and let's take a look at creating our belt.
First, we want to expand the sketches folder and notice that we have a sketch called Extruded Body.
We're going to be using the sketch and I do want to note at this point that it's contained within the top level of our file.
This means that there's no component that it's associated with.
What we'd like to do is we'd like to create an extrude from the sketch,
so we're going to start by selecting Extrude and we want to select our profile.
If we zoom in on the file, notice that there are several areas that we can select.
Make sure that you are selecting only the outside profile, so we can extrude our belt.
I then want to rotate around to a front view using my View Cube.
The reason I want to do this is, I want to make a note here about pulley alignment.
When this file was set up, notice that on the pulley in the second instance on the right,
there is a chamfer on the bottom edge.
On the left, when the joint was created, that chamfer is actually below the plate, so it is incorrectly aligned,
and this means that the sketch and subsequent Extrude feature is not going to be perfectly aligned with any of the pulleys.
This was done intentionally, so we can take a look at some of the various options for creating our extrude.
The first thing I want to do is grab the arrow on the screen with the left mouse button and drag this up.
By default because it's starting inside of the solid body on the left pulley, it's going to try to make a cut operation.
Now if we change this, we can join it with pulleys,
we can create a new body which will stay in the top level of our file or we can create a new component.
An interesting note about creating a new component,
the sketch extruded body will still stay at the top level, but the new component will contain the feature for the extrude.
So, from here we want to make sure that we're not overlapping the pulley.
We'll start by reducing the extrude distance to 4 mm,
and if we zoom in a little bit you can see that this leaves the gap here,
but as we go over to the right pulley, because of the difference in offset at the bottom, we're actually slightly overlapping this.
So, our start will be offset and we're going to enter a value of 1 mm.
So, now the belt starts at the inside edge of this pulley, and if we come over to the right,
you'll notice that we have clearance on the bottom and the top of our tensioner,
and over to the left, we have clearance on the bottom edge but we're touching the top edge.
Let's go ahead and say, okay.
Go back to our home position.
And now we've created a component called Component Six.
I'm going to left click to select it and left click one more time to rename it, Belt.
Now when we activate this component, take a look at the timeline at the bottom, it contains only the Extrude feature.
Let's go back to the top level and let's navigate to a top view.
There is something important I want to note about creating this feature, based on a sketch that was created at the top level.
Because everything is history based this Extrude feature,
and the sketch that was used to create it happened after a few other things in the timeline,
and it's important that we note this at this stage in our process.
The reason it's important is because the tensioner is free to rotate.
It's free to rotate but notice that the belt does not change with it,
and the reason the belt doesn't change with it is because the sketch in the extrude feature happened in the timeline after this component.
In order to make this belt work in this instance,
the sketch to create it would need to be contained within the component that in this case has the pulley and tensioner with it.
The reason that this is important is because if we expand the tensioner, it contains its own origin.
As we rotate components, the origin and all of its references will go along with it.
So, the only way for us to make a belt that is going to update with motion like this will be to contain it inside of that component.
For right now, we're going to select Revert and go back to its original position, so we can save our file.
But keep an eye out for this example, as we'll come back to it later on in our course as one of our challenges.