Forming-

In forming operations, the desired shape and size are obtained by plastically deforming the material in solid state. It basically makes use of the ability of materials, usually metals, to flow plastically when subjected to high stresses. Primary forming operations include forging, rolling, extrusion, wire drawing and deep drawing. These opertions are carried out either above the recrystallization temperature of the material being deformed.

Method-

The method refers to the materials, tools and processes used for the execution of the design. A design must reflect the process used for executing it. The greate strength of steel in tension has been exploited to the extrame by pretensioning the spokes so that they are always in tension , even the externally applied load acts in a way that would have caused compression if there was no pre-tensioning.