It takes a patient, thorough person to attempt building your own carbon MTB frame, with more time than money, and more tools than Mr. Goodwrench. But this dude did it, and he’s sharing the knowledge over at Instructables.
On the upside, it looks like this job might be easier than brazing or welding. On the downside, I suspect you’re going to want a class-3 respirator and a high-pressure water saw. Carbon is not the most user-friendly material in the world.
Photo: Brano, http://www.instructables.com/member/Brano/