How to draw a plow and slingshot paper?

Drawing with cad software. AutoCAD2007, referred to as CAD2007, is a 3D design tool developed by Autodesk Company. Users can use AutoCAD2007 to perfectly combine their abstract concepts with visual senses and design more ornamental and practical renderings. AutoCAD2007 is very powerful and has been applied to various industries, such as electronics, art design, machinery, architecture and so on.