A friend of mine wants to make the neck of his guitar from carbon fibre, so where can you buy it, preferably in Europe but any site that sells would do.

Build a neck of Carbon Fibre? IMO, its WAAY too thin, hollow, and tinny to get any tone. Id really stay away from it if I were you.
And even in Europe, I think it needs to be specially oredered.
Use google. And you'll need some sort of core- solid carbon fiber would be way too expensive. Basswood even would probably work.
Quote by corduroyEW
Cheap amps are "that bad". They suck up your tone like cocaine at Kate Moss' party.

I am Michael!