Blue Gee Carbon Tape 200g 50mmx1.0m Carbon fibre reinforcements are quite exceptional in their mechanical properties ~ they are also very expensive in comparison to glassfibre. Effective use of these materials is to incorporate them in a secondary role in small amounts to locally stiffen a structure. Carbon is used in a primary role in the manufacture of helicopter rotor blades, due to their exceptionally demanding performance specifications. Epoxy glass sailboards often use carbon fibre stringers in a secondary role to stiffen the board. Carbon tape is often used for repairs to carbon spars and for stiffening wooden foils and rudders.