Mechanical Design At Mill Hill Design we offer a mechanical engineering design service. We look to produce high quality engineering solutions on new projects or existing designs. We aim to take a project from the conception right through to final design. Our engineers have experience of a wide range of different aspects of mechanical engineering allowing us to work on a varied range of projects. Reverse Engineering Mill Hill Design can reverse engineer and produce engineering drawings from existing machines and components. This can be very useful when spares can no longer be obtained or the original engineering drawings are no longer available.