Carbon tubes

http://diydrones.com/profiles/blogs/705844:BlogPost:1399065
http://www.xwinder.com/
=== Polyacrylonitrile ===
https://www.youtube.com/watch?v=4t1pBvTDNXE how carbon fiber is made
Category:Uav project
Category:Robotics
Category:Cnc
Category:Construction materials
Category:Carbon fiber winder