Materials can be grouped into four main groups NATURAL, SYNTHETIC, METALLIC and NON-METALLIC.
Most materials are available from manufacturers in common regular forms. These include wire, sheet, plate, flat strip, round and square bar, tube, angle, extruded sections, granules, chips and pellets. The sizes of these have been decided by tradition. If materials which are non-standard are used this can affect cost considerably. When choosing materials you must consider cost, suitability, durability, appearance and strength.

Its 'plane and simple.

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