It is impossible to build a beam from carbon cheaper than an alloy section.
It is if a certain section is not stocked and you have to order a whole batch of at least 250 kg to even be allowed to order.
This doesn't happen in Aus or NL I admit but it did happen in Finland for example. Allowing these homebuilder to make carbon tube is actually one of the stronger points of the F16 rule set.
Wouter
