Extrude

You can use the Extrude tool to create 3D geometry by pushing or pulling a face or closed sketch in a linear direction. If necessary, you can specify a draft angle, which adds a taper to the side faces of the geometry.

The Extrude tool can result in geometry that is:

• A new body.
• Added to an existing body.
• Removed from an existing body, creating a hole.
• The intersection of the extruded profile with an existing body.

The type of extrude created is automated based on geometric conditions but can be modified if necessary.

Using the Extrude tool

To use the Extrude tool:

1. Go to Tools > Extrude.
   For other methods of accessing this tool Accessing tools.
2. Select the face(s) or sketch profile(s) you want to extrude.
   
3. Use the gizmo to extrude the selected items to your desired distance.
4. If necessary, adjust the Extrude type using the boolean badge next to the dimension label.
   Note: For more information, see Understanding default Extrude types.
5. Optional: Use the gizmo to define a draft angle.
6. Select Done.
   Note: When using Extrude from the adaptive menu, select an empty area of the grid to complete the tool.
   

History settings

To manage history settings for the Extrude action, find the step for your specific extrusion and then view or modify the following:

• Profile – Click/tap Edit… or Select… to choose a different sketch profile for the Extrude action. 
• Sides – Select the dropdown to choose between One-Sided and Symmetric for your extrude extension.
• Extent – Select the dropdown to choose between Distance, To Object, and Through All as the extent type for the extrusion.
  • Distance – Enter your preferred distance.
  • To Object –  Click/tap Select… beside To Object to select the object where you want to extend the extrusion.
  • Through All – Choose whether to turn on or turn off Flip Direction.
• Draft Angle – Enter your preferred draft angle for the extrusion.
• Start – To choose from where you want to start your extrusion, select the dropdown to choose between From Profile, Offset, and From Plane.
  • From Profile – Starts your extrusion from the selected profile.
  • Offset – Enter values for the Start Offset and End Offset fields.
  • From Plane – Select Edit… beside Start Plane to choose from which plane you want the extrusion to start.
    
    

Learn more by watching the video below:

Understanding default Extrude types

The default type of extrude that is created is based on geometric conditions. Here is a summary of the types of extrudes and when they are triggered:

	Description	The default type when:
New Body	Creates a new stand-alone body.	A sketch profile is extruded that is not in contact with any existing body.
Union	The extruded geometry will be added to an existing body. The edges where the extruded faces and the existing body meet will become shared edges.	A face is selected for the extrude and pulled away from the existing body. A sketch profile that is attached to a face is selected and pulled away from the existing body.
Subtract	The extruded geometry will be removed from an existing body, producing a hole or void.	A face is selected for the extrude and pushed into the existing body. A sketch profile is selected and pushed into an existing body.
Intersect	The result of the extrude will be the volume where the profile overlaps existing body geometry.	This type of extrude must be selected from the badge menu.

Extrude vs Offset Face

While the tools look similar, Offset Face cannot be used to create a body from a closed sketch, while Extrude created a 3D body from a 2D sketch by linearly extending a face on a body.

• Offset Face: Adjacent faces are extended or trimmed.
• Extrude: Creates a new prismatic shape from a face, while offset modifies a body.
  

Additionally, you can only Extrude planar faces, but this is not a limitation of the Offset Face tool.

Offset Face	Extrude