>> Chapter 24, creating
solids and editing in two dimensional.
In this chapter, we are working
on creating basic geometric shape,
drawing extrude, sweep, revolved,
lofted and polyline solids,
manipulating solid directly,
creating a mesh shape.
Drawing a basic smooth solid,
AutoCAD make it easy to
create the most basic
two dimensional geometric shape.
These shapes are easy to draw because you can
dynamically see the result
as you draw like this solid box.
To draw the box, follow these steps.
Choose Home tab, modeling panel to
this solid drop-down menu box
at the specifying first corner.
Specify any corner of
the box or right click and choose a center,
we are going to continue with the corner.
If you specify the corner,
you see the specifying other corner.
Going back to AutoCAD,
raising surfaces,
changing the workplace to 2D modeling.
Under Home tab, modeling box,
choose a box, select the first corner,
second corner, give a height.
Drawing wedge.
Wedge is a box slide diagonally in half.
The prompts are virtually
the same as for the box command,
as is shown in this figure.
To create a wedge, follow these steps.
Choose Home tab, modeling panel,
3D solid drop-down menu,
wedge at the specifying first corner,
specify any corner of the wedge.
If you specify the corner,
you then see the specified the other corner.
And then if you specify the corner,
asking you to specify the slope,
going back to AutoCAD,
home tab modeling panel wedge,
specify first corner, specify second corner,
and give the height for the slope.
One more time.
Drawing cone,
you can draw a cone with
a circle or elliptical base.
By specifying the negative height,
you can create the inverted cone,
like the examples here.
Follow these steps to draw a cone.
Choose Home tab,
modeling panel, 3D solid drop-down cone.
At the specifying center point,
specify the center of
the base if you want to the circle cone.
Otherwise, you can use three point,
two point tangent r or radius option
to define the circle base.
Use the elliptical option
to define elliptical base.
At the specifying height,
specify the height by
dragging or entering a value.
Cone, center point of
the circle and specify height.
Drawing sphere.
Spheres are not used very often alone,
but they can be the basic basis
for more complex model.
They centrally look pretty.
Figure 24.5 shows two solid spheres.
The left spheres use
the default isolines value of four,
the right sphere use
a isoline value of eight.
The isoline system variable
controls a number of
isolines that are displayed
on the curve three dimensional solid.
Isolines cannot be snapped.
Two, but are a help visualizing eight.
For more information, you
can check Chapter 22.
To draw a sphere, follow these steps.
Choose a Home tab,
modeling panel, 3D,
drop-down menu sphere at
the specifying center point,
specify center of the sphere.
If you want the sphere to lie
on the xy plane,
the z-coordinate of the center
should be equal to the radius of the sphere.
Use a two point,
three point or Tangent option
to define a circle
at the center of the sphere.
At the sphere radius, prompt,
drag and pick a point on the surface
of the sphere or
enter a value for the radius.
You can use a diameter option
to specify the diameter.
Sphere, center, and
the radius. Drawing cylinder.
Cylinders are very common
in two dimensional motoring,
both in building models and creating a holes.
Figure 24, it's going to be next
page shows three solid cylinders.
The grid helps you to visualize the xy plane.
You can draw a cylinder with
a circle or elliptical base
by specifying the center
of the top of the cylinder sphere.
You can draw it at an angle.
Follow the steps to draw a cylinder.
Choose a Home tab,
modeling panel 3D
solid drop-down menu cylinder,
a specifying point,
specify center point of the circle,
or define the circle by using a two point,
three point or Tangent option.
You can also choose
elliptical option to define
an ellipse as a base
at the specifying height,
specify height by dragging
entering value or using a two point options.
Drawing a torus. A torus
is a solid three dimensional doughnut,
as shown in the next page picture,
with a part of a torus labeled,
you can make some unusual shape
by varying the torus and tube radius.
If the torus radius is negative and
the tube radius is larger than
the obvious value of the torus radius,
for example, -2 and three,
you create a lemon or football shape.
If the tube radius is larger
than the torus radius,
you create the puckered ball
or apple shape to
create a torus follows the steps.
Choose Home tab, modeling panel 3D solid
drop down torus at
the specifying center point.
Specify center of a torus.
You can use a two point,
three point or Tangent option.
To define the circle as the basis
in the torus at the specifying radius,
specify the radius of
the entire torus on
the diameter option to specify diameter.
At the specifying the radius,
specify the radius of just the tube
or use a diameter option
to specify the tube diameter.
You can use the two point option to pick
two points that define the tube radius.
That's a torus.
Do you want apple or lemon?
Apple.
And another torus.
Torus radius two tube radius three.
Drawing panel pyramid, you
can draw a pyramid with the bases
of 3-32 sides.
The prompts for the base are
similar to the prompts
of the polygon command.
A pyramid can come to point or
you can truncate it.
You can also tilt the pyramid,
as shown in this figure.
So follow the steps to draw a pyramid.
Home tab, modeling panel 3D
solid drop down pyramid.
The default number of side is listed
as well as whether the base will
be inscribed or circumscribed
at the specified center point,
specify the center of the base.
You can use the edge option or
a side option at the specifying radius,
drag to specify the radius
enter or enter a value.
You can use the inscribed
option to change the whether
the radius is inscribed, or circumscribed.
At the specifying height,
drag to specify the height to enter a value,
use a two point option to specify
the height by picking two points.
Use the axis endpoint to specify the tip.
If it's not directly over the basis,
center, you tilt the pyramid,
use the top radius to truncate the pyramid,
drag or enter a value of
the tops radius and
then enter the height of the pyramid.
Next video is going to follow with
the steps drawing basic 3D solid.
So find the file ab24-a. Thank you.