The first command dedicated to face editing is called taper. This command is used to tilt the face of an existing solid body, as we will see in this section. To start the taper faces command, you can type SOLIDEDIT and then press Enter, and then click on Face followed by Taper. Alternatively, you can click on the Taper Faces button found in the Edit panel in the 3D Basics workspace, as shown in the following diagram:

If you are using the 3D Modeling workspace, you will find the Taper Faces button in the Solid Editing panel on the Solid tab.

The taper faces command can be used to tilt a surface of an existing 3D solid body, as shown in the following example:

1. After you start the taper faces command, select the faces to be tapered and then press Enter to end the face selection stage.
2. Specify the taper direction by determining the taper axis. This is determined by specifying two points.
3. You will be prompted to enter the taper angle. Type the angle value and then press Enter to finish.

The following diagram is an illustration of the previous steps:

In determining the taper axis, you determine two points. The first point is the base point of the tapering axis, and this side of the face will not be moved; then, you determine the second point, which will be moved to achieve the taper angle, as shown in the following diagram:

The taper angles determine whether the tilting will be inward or outward; negative angles will taper outward, while positive angles will taper inward, as shown in the following diagram:

Notice that if you perform taper face operations on a 3D object, the grab point will disappear from the resulting 3D body, even if you started with a primitive 3D object that had grab points.

Now that we have learned how to tilt the face of a solid body, let's have a look at the next command in our group, which is called extrude faces.