AutoCAD is divided into commercial version and educational version. The educational edition is cheaper, but it will limit printing. The educational version will be stamped when printing to avoid commercial use.

If you print the education seal on the drawing, there are two possibilities: you installed the education installation package; You chose the wrong version when you authorized it, and accidentally pressed the education version to activate it.

For example, some installation packages will have a similar situation. I have never seen such an installation package. This is a description of an installation package I saw:

Before entering the authorization code, click Permanent and Commercial. If you click Education Edition first, the activation code of Education Edition will be calculated.

If it is business or education, when you draw a picture, your picture will be marked in the lower right corner.

Remember: you can only click permanent.

Note: During installation, the serial number should not be 000-0000000, but191-754444; Select Business when activating.

Second, a simple way to eliminate the imprint of the education edition.

First make sure that the CAD you are using now is not educational software, and then:

1. First save the file in dxf format, then reopen CAD, open the file in dxf format just saved, and save it in dwg format, so as to remove the production mark of Autodesk Education Edition when printing.

2. Use other dwg version conversion tools (such as AcmeCADConverter) to convert to R 14.

3. Save it as a DWT template file and save it back to DWG after opening.

Third, use plug-in tools to delete

There are such tools on the internet, but according to everyone's reaction, not all versions can be used.