33 years involved in the design of machines, gadgets / technology equipment / design.My areas are transport equipment, restaurant equipment, construction of boutique houses / old design /.First i check for patent purity and then do the technological design If necessary, make new design / if / to avoid the legal and moral issues.I work primarily in 3D sketches / hand drawings / approval to the customer. Then, depending on the task in AutoCAD or SolidWorks produce drawings.