Carbon fiber is a material that has been used to make cello bows for over 20 years as an alternative to wood. A number of fine-quality carbon fiber cello bows are available from firms such as Coda Bows, Jon Paul Bows and Arcus. Carbon fiber cello bow makers aim to achieve the same weight, balance and stiffness as wood bows. This is achieved by adding different materials to the core of the bow to change the vibration speed of the stick. This is the secret sauce of the carbon fiber bow industry.