>> This is a tutorial for doing the first lab.
This is shown in the figure here, the drawing of a car
that we're going to draw using AutoCAD.
We're going to start with a new file.
Key new. OK.
And we're going to select "Open with a template imperial."
Imperial means that the drawings will be in inches.
And then we start with -- I'm going to turn on the grid
to help us -- aid us in our drawing.
I'm going to start with the circle command
and then enter the coordinates of the center
of the circle, zero, zero.
And we use 1.25 for the front wheel.
And the inner circle, I'm going
to repeat circle command again
with a center zero, zero and a radius of 1 this time.
Then I'm going to create the back wheels.
The center of the circle will be at 11, zero.
And a radius, again, of 1.25.
And then the inner circle, you keep the circle command at 11,
zero center, again, and a radius of 1.
Now, you can use your scroll from your mouse
to zoom in and zoom out.
And then if you hold the scroll bar and then move your mouse,
you can pan the drawing to a position,
any way you want, anywhere you want.
Now we're going to create the body of the car
by using the line command.
OK. I'm going to start.
The starting point would be 91.25 comma zero.
That would be the left quadrant of the front wheels.
And then the next point will be minus 4.25 comma zero.
Just move my line to the left.
And then the next one, for the vertical one,
we're going to use what's called a relative coordinate system.
If you put at in front of it,
that means the coordinates are relative to the previous point.
So zero, it doesn't move along x. And 1.5 moves it up.
And then I'm going to continue using the relative coordinate
system at 7 and 1.
And then, again, relative
to the previous one it's 3, at 3 comma 2.
And relative to the previous one would be at 7.5 comma zero.
I keep putting at so that I don't have
to compute the coordinates relative to actual origin,
it is relative to where I was previously.
And then I'm going to move to the right and down.
So to the right by 2 and down by 2.5
so positive 2 comma minus 2.5.
And then down, so it is at, again, zero comma minus 2.
So don't forget about that.
And then, finally, I'm going to move to the left
by using a polar coordinate.
I'm moving to the left at 3 at an angle
of 180; it's the negative x-axis.
But to add the last remaining line at the bottom of the car,
we're going to use the snap, function snap,
and the object track command.
Make sure that those two are on.
And then I'm going to create the line.
OK. I'm going to just hover the cursor on the origin
and then move it slightly to the right until I see intersection
with the actual point and then I will try
to do the same thing on the right side.
Just hover to the center of the circles
and then try to find intersection.
I'm having problems.
Sometimes this -- it doesn't work very well.
I can't find intersection between the left quadrant
of the while and the horizontal line
so I'm going to keep trying.
If this doesn't work, you can just give the coordinates.
However, let me try some more.
I'm going to zoom in, which is hopefully OK.
So let me find the center of the circle,
the radius, and then there we go.
I found the intersection.
Finally, that took me a while.
I finished the line command
and then used the scroll bar to zoom out.
The next thing we're going to do is I'm going
to show you the window command.
So you want to make sure
that the navigation on the right is on.
If it's not, you can go to view and then make sure that it's on.
And under here, currently it's zoom expanse.
You can use zoom window to create a window around it.
Click on the left side of the window,
lower left side of the window.
Click on it.
It just creates a window around it without changing --
you are just zooming it without changing the picture.
And then click on the up right end corner of the window.
So we're zoomed in now.
We are ready to add dimensions.
To do this, click on the annotate tab and then click
on dimension style manager.
Click here on this arrow and then click on modify.
And under modify, click on the primary units tab
and then make sure that you're only displaying 2 decimal places
for the dimensions.
And then, once you have changed the settings,
close the dimensions style manager.
Now we're add dimensions.
Just click on dimensions, linear dimensions.
And then we're going to start on the left.
OK. Click on the first end point of the line to the second.
And then if you want to position it relative to the line,
you can turn on the snap command so that your position will be
in an exact position and in the gridlines.
Then continue doing this to the next set of locations.
And another linear dimension.
Just on the horizontal dimension between those two points.
Position it up here.
Continuing on.
And another set here.
One more horizontal dimension here.
Then we're going to fill in the dimension on the right side
with vertical between these two points.
Position it somewhere here.
One more vertical dimension.
I line up and then going back to horizontal dimension.
So this point to the center of the back while.
Just position it somewhere here.
And then between the centers of the circles.
Align the position.
And then, finally, the last dimension
from this origin, the front of the car.
And we're done.
Then we will add diameter dimensions
for the outer circle here.
I'm going to turn off the snap so I can go
to specific locations of the circle.
It's easier.
And another one here.
Circle. And I am done.