ENT135 Module 12 00

>> 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.