Use AutoCAD EXTRUDE to Create 3D Solid

AutoCAD tutorial: how to use EXTRUDE to create 3D solid?

EXTRUDE

This command is similar to EXTEND, but you can use it to create a 3D solid from a surface or a surface from a line in several ways. It will save you a lot of time if you use it to draw walls.

Before you invoke this command, make sure that you’ve switched to an oblique view.

Steps:

1. Input [EXT] and press Enter.
2. Select the to-be-extruded entities.
3. Specify the height/direction/path/taper angle of extrusion following the prompts in the command line.

As the GIF above shows, I created a surface from a line, a solid from a surface and an extrusion along a specified path.

Tips

1. The system variable, DELOBJ, controls whether to delete the original objects. When it is 1, the original objects are deleted, whereas they are retained when it is 0.

2. The value of the taper angle could be from “-90” to “+90”. When it is positive, the extruded part will be tapered, while when it is negative, the extruded part will be larger than the original entity. If it is 0, the entity will be extended in the direction vertical to the plane where the original entity lies.

3. Blocks and self-intersecting polylines can’t be extruded.