1. Use a maul or splitting wedges to split hardwood. A splitting maul is essentially a thicker, more wedge-shaped axe made for splitting hardwood along the grain, with a blunt sledge-hammer edge on the back of the splitting blade.
Carbon fibre is a material that is made from very thin fibres having carbon atoms. These are bonded together in microscopic crystals, aligned parallel to the long axis of the fibre. It is this crystal alignment that makes carbon fibre so strong. Carbon fibre is used to make composite materials with plastics resins.
The strongest material would be boron fiber. That is not very practical because ot is expensive and brittle. The cost of carbon fiber is probably also too high to use for bridge strands. A drawn alloy steel wire is probably still the best choice, with tensile strengths of over 100,000 pounds per square inch being possible.