1. After handwritten signature, scan it with a scanner or shoot it with a digital camera. It is better to have a higher pixel and save it as a raster file.

2. Insert the signed raster image into the AutoCAD interface;

3. Use AutoCAD's "polyline" command to draw a signature in the raster image, just like drawing red when I was a child. If you think the line is too thin, you can make it thicker.

4. After modifying the perfect face, zoom to the appropriate size;

5. Use the Block command to save the multi-segment line signature as a block, and copy and paste it to the corresponding position every time you use it (at this time, you can delete the raster image).

6. The method of removing the border: modify-object-image-border, and eliminate the text border.