I have been experimenting with various materials to find an appropriate oscillating "mast" to support a striker in a wind driven musical sculpture. 6mm carbon fibre tube looked very promising except that it displayed a distinct bias in its patern of deflection. I assumed that this was a result of the process of it's manufacture and purchased some carbon fibre rod expecting this to behave in a uniform manner. Disappointingly the rods (especially in small section) display at least as much bias as if they are made up of ribon layers rather than strand. Any suggestions?

Thanks for the very prompt reply. I attach a sketch which I hope explains what I'm trying to achieve and what I'm getting right now. By bias I mean that if you take a lenth of cf rod say 2mtrs long and let one end rest on the floor at an angle with the other held in your right hand and you bend the rod at it's centre with you left hand whilst rotating with your right there are two very distinct zones of resistance to deflection at 180 degrees to one another i.e. in the same cross sectional plane. I don't know how the fibres are laid up in the pultrusion but they seem to behave as if they are layered (ribon) rather than random (strand). I suppose the real question is am I looking for something that cf rod does not have?