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The materials allowed in the Antweight World Series fall in two categories:

Chassis - The chassis can be made of basically any material, including steel, aluminium, titanium, etc.

Armour - The armour can be split into base and top sections. Bases may be made from any plastic, card, balsa wood. Top panels may be made from expanded polystyrene, card, balsa wood. Plasticard, nylon, pvc, abs and other flexible plastics may be used up to a recommended maximum 1mm.