21-7. AutoCAD MODELING SUBTRACT 3D Draw

How to use SUBTRACT in AutoCAD?

To cut off part of the 2D or 3D model
Modeling Toolbar - Modify Menu - Solid Editing - Subtract

SUBTRACT command on the MODELING/SOLID EDITING toolbar used to cut two or more objects (which was previously treated) REGION command (that facilities must be enclosed area or a 3D object).
Command can be run in command line prompt => Subtract
Pay attention to the clause for the Subtract command.

Create two or more objects. If the area is closed (unless you use a command or BOUNDARY REGION) can be cut with a Subtract command one object from another.

EXAMPLE cutting OFF, 2D drawings or 3D object
Subtract in AutoCAD

From the square we cut to get a square truncated round.

The procedure for cutting off an object from another is made as follows:

 
  1. - Draw objects (in 2D or 3D object)
  2. - Start the Subtract command by clicking a button or by typing commands in the Command Line
  3. - Click on the first object (from which Cut off, then that should remain and it is in our case a rectangle)
  4. - Press ENTER (or click RM on the desktop)
  5. - Select the second object (ie WHO Cut off the circle)
  6. - Press Enter
Command: _subtract Select solids and regions to subtract from .. [start order]
Select objects: 1 found [click on the first object of which cut the second]
Select objects: [Enter key or click the right mouse button on the desktop]
Select solids and regions to subtract .. [select another object ie departments]
Select objects: 1 found [press Enter]
Now you have this result.
Subtract one draw from two merged draw

Now, with a EXTRUDE command  lift the object and create a 3D model.
Extrude draw in AutoCAD

Subtract command can be used wherever you need to carve, chop off part of a body or a 2D object, for example: to make holes in the wall of windows in a 3D view and the like. (using the command Subtract I made gutters in the drawing home)
See the link view and download the DWG drawing file (click ExampleZip1 and ExampleZip2).
INTERSECT command does a similar act only as a result remains a movement (it explore on your own).

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