Using the Extrude tool
The Extrude tool is used to add a third dimension (height) to an existing 2D shape. If you extrude a closed shape such as circle and closed polylines, a solid is created. If you extrude an open sketch such as lines and arcs, a surface is created.
Example:
Start a new AutoCAD file in 3D Modeling workspace.
Click Home > View > 3D Navigation > Front on the ribbon; the
front view will become parallel to the screen.
Click Home > Draw > Polyline on the ribbon and create the sketch
as shown below.
Select SE Isometric from the In-canvas controls; the view orientation will be changed SE Isometric (South East Isometric).
Click Home > Modeling > Extrude.
Select the polyline sketch and move the cursor toward right.
Type 200 in the command line or Dynamic Input box and press ENTER; the polyline
sketch will be extruded.
Example:
Open a new AutoCAD file in 3D Modeling Workspace.
Click Home > View > 3D Navigation > Top on the ribbon; the view will
become parallel to the screen.
Click Home > Draw > Line on the ribbon and create the sketch as shown below.
Click Home > View > 3D Navigation >SW Isometric on the ribbon; the view orientation will be changed to south west Isometric.
Expand the Draw panel of the Home tab and click the Region
button. Alternatively, enter REG in the command line to activate
the Region tool.
Press and drag a window and select all the objects of the sketch.
Press ENTER; the sketch will be converted into a region. Now, you can
extrude the region to create a solid. If you try to extrude the lines
without creating a region, it will result in a surface.
Click Solid > Solid > Extrude on the ribbon.
Select the region and press ENTER; the message, “Specify height of extrusion or [Direction
Path Taper angle Expression]:” appears in the command line.
Select the Tape angle option from the command line.
Type 15 as the taper angle and press ENTER.
Move the cursor upward, type 20 in the command line and press ENTER; the extruded
solid will be created with a taper.
Example:
Click Home > View > 3D Navigation > SE Isometric on the ribbon; the view orientation will
be changed to south east Isometric.
Type EXT in the command line and press ENTER to activate the Extrude tool.
Press and hold the CTRL key and select the top face of the model.
Press ENTER and move the cursor upward.
Type 20 as the extrusion height and press ENTER; the extruded solid will be created.
