3.3.5 Communication of design ideas GapFill

Perhaps the most common method of communicating design ideas to others is to use a form of  freehandflow chartsystemsfirst angle sketching. This method can be in 2D or 3D and  obliquesystemsisometricfirst angle projection drawn at 30 degrees to the horizontal to show ideas in 3D. A more realistic 3D form of communication which involves the use of vanishing points is known as  orthographic projectionflow chartsexploded projectionperspective.  PerspectiveSchematicObliqueExploded drawings are best used when designing and communicating electronic circuits. Working or orthographic drawings are in 2D and can be drawn in first or  secondrightthirdisometric angle and are used to show dimensions and are drawn to scale.  Computer modelsAudio recordingsExploded diagramsIsometric projections show constructional detail such as joints, and are often annotated to say how parts fit together. Computer modelling, often using  CADCNCABCCAM or mathematical modelling, is a great way to be able to convey design ideas and even run tests and simulations on products before they are manufactured.