Some users have the need to bring 2D CAD data (say from AutoCAD or DXF) and import it into sketcher. It may seem like an easy thing at first. But, it does involve certain steps.
The drawing file (CATDrawing) is available for download here.
Find CAD Tutorials from popular design and manufacturing software such as AutoCAD, CATIA, Inventor, SolidWorks and Mastercam. Tricks and tips are available to aid the user in becoming more proficient in using the program of choice.