It should represent the minimum necessary to define view objects.
The front view provides information about the three forms cylindrical object.
A side view can complete three-dimensional information.
From the side view that you choose this less hidden lines as a general criterion, but each piece must be studied carefully separated.
The transition between tangent planes cylindrical shapes and can be represented by a thin line and not by a boundary edge.
The use of different thicknesses for tangency edges serves to make the continuity of the surface.
Represent the views of the object
Displaying the piece may require a extension browsers “Chrome” for proper handling.
The perspective of the object can change cylinder to a cone in the viewfinder.