Automatic CAD2004 computer

Methods/steps

1. First, open the software and enter the "Auto CAD Classic Interface".

2. Enter the formula "rec" directly and press the space bar.

3. Enter a new interface, enter "c" in the input box and press the space bar.

4. A prompt will pop up and enter "3".

5. Then enter "3".

6. Drag the mouse where you want to insert the chamfer, and the chamfer will be drawn.