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:
- Go to Tools > Extrude.
For other methods of accessing this tool Accessing tools.
- Select the face(s) or sketch profile(s) you want to extrude.
Define the direction and distance for the extrude using these methods:
- Drag the linear arrows to move the face dynamically.
- Select the linear arrows or dimension label to enter a value in the numpad.
- If using a keyboard, type a value when the dimension label is highlighted.
If necessary, adjust the Extrude type using the boolean badge next to the dimension label.
Note: For more information, see Understanding default Extrude types.
If necessary, define a draft angle using the following methods.
- Drag the curved arrows to move the side faces dynamically.
- Select the curved arrows or angular dimension label to enter a value in the numpad.
- If using a keyboard, type a value when the angle dimension label is highlighted.
- Select Done.
Note: When using Extrude from the adaptive menu, select an empty area of the grid to complete the tool.
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.
- Distance – Enter your preferred distance for the extrusion.
- Draft Angle – Enter your preferred draft angle for the extrusion.
- Extend – Select the dropdown to choose between Distance, To Object, or To Point as the extent type for the extrusion and select Select… beside Object to select the object where you want to extend the extrusion.
Result – Select the dropdown to choose between New Body, Union, Intersect, and Subtract as your preferred extrude type and select Selec… beside Target to select the target bodies for your extrude type.
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:
|The default type when:
|Creates a new stand-alone body.
A sketch profile is extruded that is not in contact with any existing body.
|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.
|The extruded geometry will be removed from an existing body, producing a hole or void.
|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.