2004

Table Of Contents

310 | Chapter 16 Draw Geometric Objects

To create a dome or dish, combine a sphere with a box and use SUBTRACT. If

you want to create a spherical object that has additional detail, create a 2D

profile and use

REVOLVE to define a rotation angle about the Z axis. The 3D

command creates a spherical shape defined by surfaces only.

Create a Solid Torus

You can use

TORUS to create a ring-shaped solid similar to the inner tube of

a tire. The torus is parallel to and bisected by the XY plane of the current UCS.

To create a lemon-shaped solid, use a negative torus radius and a positive

number of greater magnitude for the tube radius. For example, if the torus

radius is –2.0, the tube radius must be greater than 2.0.

A torus may be self-intersecting. A self-intersecting torus has no center hole

because the radius of the tube is greater than the radius of the torus.

The

3D command creates a toroidal shape defined by surfaces only.

Create a Solid Wedge

You can use

WEDGE to create a solid wedge. The base of the wedge is parallel

to the XY plane of the current UCS with the sloped face opposite the first

corner. Its height, which can be positive or negative, is parallel to the Z axis.