The EXTRUDE command is used to create 3D solid or surface by extruding the dimension of selected object. For example, a circle can become a cylinder, a line can become a 3D plane, and a rectangle can become a box.

How to access EXTRUDE?

* From Menu: 3D > Modelling > Extrude, as shown in the following picture,

* By entering command EXTRUDE, as shown in the following picture,

A step-by-step tutorial to make a circle into cylinder

  1. Create a random circle in 2 dimension, as shown in the following picture,

2. When it comes to creating 3D objects, we’ll need the Z-axis, so enter 3DO and press Enter key, as shown in the following picture,

3. Now we can see this circle in 3 dimensional perspective, as shown in the following picture,

4. Execute the EXTRUDE command, and select objects to extrude as prompted in the following picture,

5. Select the circle, and specify height of extrusion, as shown in the following picture,

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