I had not. But I would think it might be a bit brittle across the two armrests, compared to carbon at least and especially once it's been drilled and countersunk. No actual idea, just an assumption.
Plenty of cheap tribars have plastic elbow cups. On the other hand, making your own carbon fibre ones isn't much harder than forming them from plastic.
I had not. But I would think it might be a bit brittle across the two armrests, compared to carbon at least and especially once it's been drilled and countersunk. No actual idea, just an assumption.