LEARNING OBJECTIVES

After completing this lesson, you will be able to:

1. Extrude solid surfaces.

2. Create a Region.

3. Review Polyline Join command.

4. Use Presspull command.

Sorry LT users, you do not have this option.

EXTRUDE

AutoCAD s solid objects are helpful in constructing 3D solids quickly. But what if you want to create a solid object that has a more complex shape, such as the one shown here.

To create the solid shown above you first need to draw a closed 2D shape and then EXTRUDE it.

The EXTRUDE command allows you to take a 2D shape and extrude it into a solid. It extrudes along the Z-Axis. Extrusions can be created along a straight line or along a curved path. The extrusion may also have a taper.

You may EXTRUDE Polylines, Arcs, Circle, Polygon, Rectangle, Ellipses, Donuts, and Regions. (Splines can also be extruded but we are not discussing those in this workbook)

There are 4 methods for extruding a 2D shape:

1. Perpendicular to the 2D shape with straight sides.

2. Perpendicular to the 2D shape with tapered side.

3. Along a Path

4. Extrude a Region.

HOW TO SELECT THE EXTRUDE COMMAND

• TYPE = EXT or EXTRUDE

• PULLDOWN = DRAW / MODELING / EXTRUDE

• 3D MAKE CONTROL PANEL =