1. Open the CAD software, and open a drawing containing "AutoCAD educational product making". When the drawing is opened, the prompt interface will prompt "educational printing seal detected".

2. Click the big "A"-File-Print (you can also use the shortcut key ctrl+P) in the upper left corner to open the printing interface, select the printing range as the window, and then frame the drawing, as shown in the following figure.

3. When you click on the preview in the lower left corner, you will find that all four sides of the drawing are "AutoCAD Education Edition Product Making".

4. Right mouse button, click the Exit key, click the big "A"-File-Save As in the upper left corner (you can also use the shortcut key Ctri+Shift+S) to change the file type to AutoCAD 2007.

DXF(*。 Dxf), click Save (you can put the file to be saved in another folder), as shown in the figure below.

5. Close the original drawing, click Open in the upper left corner, select the file location in the storage location of DXF file, and change the file type to DXF(*. Dxf), then click the previously saved file and click Open.

6. Then according to the second step, click the big "A"-File-Print in the upper left corner (you can also use the shortcut key ctrl+P) to open the print interface, select the print range as the window, then select the drawing in the box, click the preview in the lower left corner, and the print preview will come out, and the "AutoCAD Education Edition Product Making" will be removed.