Using The Extrude Tool
This tutorial will cover in depth the extrude tool and all of its functions.
Create a sphere by going to create>polygonal primitives>sphere.
And make sure you have a basic knowledge of Maya.
What Does Extrude Do?
Extrude creates new geometry from a selected component. This selected component can be vertices, edges, or faces; most commonly used is faces.
More on that later. You can extrude multiple components at a time.
Creating An Extrude
Step one - Select the face or faces.
Step two - Go to edit mesh>extrude.
For this example, use the blue handle and move the manipulator forwards.
You can see the extruded faces.
Using The Manipulator
The manipulator connected to the extrude tool can scale, rotate, and move.
Now the manipulator works like the move tool.
To rotate the manipulator, click on the blue ring around the manipulator.
This enters the rotate mode and, by clicking on one of the rings, you can rotate around one of the axis.
By rotating the blue ring that surrounds the model, you'll rotate the object along the camera's axis.
What's The Difference Between Extrude And The Move Tool?
Anatomy Of An Extrude
Step one - Repeat the set-up and create another extrusion.
This is a rundown of most used extrude attributes.
Translate Attributes - This is the location of the extrude in world space.
Extruding Along A Curve
Step one - Create a curve by using the create CV curve tool. When you create your curve, it should be created going outwards from the geometry.
Step two - Select the face that you intend to extrude, then hold shift and select the curve and go to edit mesh>extrude.
Step three - Open the attributes editor. The most important attribute to change is the division attribute. The extrude will look bad until you increase the number of divisions.
Here's a rundown of the poly extrude curve attributes:
Keep Faces Together
The image below shows the difference between an extrude with this on and an extrude with this off.
To turn it off, go to edit mesh>keep faces together and uncheck it.
This tutorial has covered a lot of the main features when extruding.