What is the difference between isometric and orthogonal drawing?
Orthogonal drawing involves drawing accurate specifications of a 3D object from fixed perspectives (at 90 degrees from each other) so as to make a clear blueprint from which to construct a design. These perspectives are typically from: directly above; from the front; and from the side – providing all the information you need to fabricate an object. Isometric drawing presents a 3D object in a different way, using three axes that are separated by 120 degrees. Start with a vertical line, then measure with a protractor 120 degrees either way from one end and extend two more lines. These are your three axes / dimensions. Stick to angles of 30 and 120 degrees and start with simple shapes and you’ll get the hang of it in no time.
