>> Hello. Welcome to Module 12.
In this module, we are going to follow
the book AutoCAD 2015, Bible,
and Chapter 24,
creating solids and editing in 3D.
In this chapter, we are
working on creating base geometrical shape,
drawing extrude, swept, revolved,
lofted and polyline solid,
manipulating solid directory,
creating a mesh subject.
For drawing, basic, smooth, solid,
AutoCAD make it easy to create
most basic 3D geometric shapes.
These shapes are easy to draw because you can
dynamically see the result as you draw.
For example, drawing box in Figure
24.2 shows a solid box
with a hidden visual style applied.
To draw a box, follow these steps.
Choose home tab, modify panel,
3D solid, drop down menu box.
I'm going to go to AutoCAD.
We are in the 3D modeling space.
We are under the solid box.
And the best way of
seeing the result is to change
the view to
either Southwest or Southeast view.
Box.
At the specified first corner
or center prompt,
specify any corner of the box or right click
and choose a center to
specify the 3D center of the box.
Not the center of the base.
If you specify the corner, the default,
you then see the specified other corner
or cube length prompt.
The default is to pick the opposite corner
in the X and Y plane.
This defines the base of the box.
You can define the base just
like you define any rectangle by
dragging and picking the opposite corner or
by entering a coordinate
at the specifying height,
or pick two points to specify the height.
This complete the box.
If you specify the center
at the first prompt,
you see the specifying center
of the box appears.
If you pick the corner of the box,
AutoCAD then ask you
for the height to complete the box.
If you specify the length,
AutoCAD then ask for the width and height.
If you use the cube option,
other AutoCAD asks for
a length and complete the box.
You can specify a negative length,
width or height to
build the box in the negative direction.
If you specify the center of the cube,
don't forget that the centre's Z coordinate
is different from the corners' Z coordinate.
AutoCAD always create the box
parallel to the XY plate.
Drawing a wedge.
A wedge is a box sliced diagonally in half.
The prompts are virtually the
same as for the box command.
Figure 24.3, which is here,
24.3, shows two solid wedge.
For creating a wedge,
follow the steps from the book,
going back to AutoCAD.
Choose a home tab,
modeling panel, 3d solid drop-down menu.
Wedge.
At all specified first corner,
specify any corner of the wedge or use
the center option to
specify 3D center of the wedge.
If you specify the corner by default,
you then see the specified other corner
or cube length prompt.
The default is to pick
the opposite corner in the XY plane.
You can also define it by using a coordinate.
The command then asks you for
the height in the Z direction.
This complete the wedge.
If you use the cube option,
AutoCAD ask for one length
and complete the wedge.
For positive length, the wedge
slopes downward in the positive Z direction.
However, if you have a dynamic input on,
the slope will follow
the direction of the cursor.
If you use the length option,
AutoCAD asks you for a width and height.
If you specify the center,
you see the specified center prompt.
Specify the center point,
the specified corner or
cube length prompt displays.
If you pick the corner of the wedge,
the command asks for the height.
If you specify a length,
AutoCAD then ask for the width and height.
If you use the cube option,
AutoCAD ask for the length and complete
the wedge. Drawing cone.
You can draw cones with
a circular or elliptical bases.
By specifying negative height,
you can create an individual cone like
an ice cream cone by
specifying the axis endpoint,
the APX, you can draw
cones on the angle from the X and Y plane.
You can also specify a top radius to create
a truncated cone,
sometimes called a frustum cone.
Figure 24.4 shows some cones.
So here is the steps for drawing cone,
going back to AutoCAD.
Choose Home tab modeling panel,
3D, solid dropdown menu,
home tab modeling,
solid dropdown menu, find cone.
At the specified center point or base of 3D,
2D elliptical,
specify the center of the base.
Just click on the screen.
If you want a circle con, otherwise,
use the two-point or three-point
or tangent-tangent radius option
to define a circle basis.
Use the optical option,
define an elliptical base.
If you specify a center point at
a specify base, radius or diameter.
If you specify center,
which we specify center,
specify a radius or use
a diameter option, specify the diameter.
If you choose the elliptical option,
use a prompt to define the elliptical base.
Then prompts are like
the prompts for the ellipse command.
So here we are at
specify base radius or diameter,
just click anywhere on the screen,
and then you see specify a height.
Specify the height by dragging
or entering a value.
Use the two-point option to
specify the height by picking two points.
At the access endpoint option
is another way to specify the height
and enables you to create the angle of cone.
By default, the access endpoint is
a relative coordinate based
on the center of the base.
The top radius option
create a truncated cone.
I'm going to give a height, click here,
I'm changing the visual style to conceptual.