How to Use Extrude in AutoCAD 2018?

Mastering the Extrude Command in AutoCAD 2025

Understanding the Extrude Command

The Extrude command in AutoCAD is an essential tool used to transform 2D shapes into 3D objects. This command allows users to create solids or surfaces by extending 2D profiles along a straight line, giving depth to the designs. It effectively turns drawings into tangible 3D models, which is crucial for various applications in design and engineering.

Setting Up Your Workspace for Extrusion

1. Activate 3D Modeling Workspace: Before starting your extrusion, ensure your workspace is set to 3D Modeling. Click on the Workspace Switching option located on the status bar and select the 3D Modeling workspace.

2. Access the Solid Tab: Navigate to the Solid tab located in the main toolbar. Here, you will find options related to solid modeling, including the Extrude command.

Step-by-Step Guide to Extrude in AutoCAD 2025

1. Select the Objects: Begin by selecting the 2D object or profile that you intend to extrude. This can include lines, polylines, circles, or any closed shape.

2. Initiate the Extrude Command: With your object selected, navigate to the Solid panel and click on the Extrude button, or use the command line by typing EXTRUDE and pressing Enter.

3. Specify Extrusion Height: After initiating the command, AutoCAD will prompt you to define the extrusion height. You can enter a numerical value for the height or use the mouse to drag and visually set the extrusion length.

4. Adjust Parameters if Needed: Depending on your design requirements, you can also modify the size adjustments along the X and Y axes. Specify any taper angles if necessary.

5. Finalize the Extrusion: Once all parameters have been set, confirm the operation by clicking OK or pressing Enter again.

Understanding Extrude Path in AutoCAD

The Extrude along a path option in AutoCAD allows for more complex shapes to be created by following a specified trajectory. This feature is particularly useful when creating objects that need to follow a curved or irregular path.

1. Select the Path: First, create or select a path that will determine the extrusion’s trajectory.

2. Choose the Object to Extrude: Select the 2D object that you want to extrude along this path.

3. Execute the Extrude Path Command: Go to the Solid tab, then click on the Extrude option followed by selecting “Extrude Along Path.”

4. Confirm Parameters: Similar to the basic extrusion, specify any necessary heights or taper angles for a refined effect.

The Distinction Between Extrude and Presspull

While both the Extrude and Presspull commands are used for creating 3D geometries, they serve different purposes:

• Extrude Command: This command is primarily used for giving height to a 2D shape, resulting in a solid object stretching in a uniform direction.

• Presspull Command: This is used for creating solids directly from faces or closed boundaries. It allows you to ‘pull’ material out from existing objects, making it suitable for more complex 3D modifications.

FAQ

1. Is it possible to extrude in AutoCAD LT?
Yes, AutoCAD LT supports the Extrude command. You can access it from the Home ribbon, under the Modeling panel, and extrude 2D shapes just like in the full version.

2. Can you use other 2D shapes besides closed polygons for extrusion?
Yes, while closed shapes are typically used for extrusion, other 2D geometric forms such as lines and arcs can also be involved in creating a 3D model, depending on the desired outcome.

3. What types of objects can be created using the Extrude command?
The Extrude command can be used to create a variety of objects, including solid blocks, walls, cylinders, and other forms that require depth from a 2D profile. It is highly versatile for various design applications.