A working drawing is needed so that you could give your design to someone else and have them make it for you in a factory. Most of the detail of your design can be presented using a 3rd Angle Orthographic drawing of your product. It should be to an appropriate scale e.g.  At a scale of 1:10 and the width of your product is 600mm would be drawn at 60mm. With a scale of 1:5 600mm would be drawn as 120mm etc. Choose the scale for the main drawing and if you need to highlight particular parts of your design you can explode the drawing.

Click here for larger view