Working with Solid Models and Weldments - Autodesk Inventor 2010: No Experience Required - page 157

FIGURE 4.1 Creating a simple sketch
The Extrude Tool
Despite what you've done so far in this topic, users most often use the Extrude
tool to create initial shapes.
The Extrude tool dialog box (Figure 4.2) is typical of Inventor dialog boxes.
FIGURE 4.2 The Extrude dialog box