No to birthing - you'd never get those angles to lay right IMHO. What will you use for backing? Another option is to choose a backing that would make a good binding and bring the backing over to bind. You still have to fold all those angles and they're tricky - but it's possible. Here's an octagon that has the backing brought over:
http://www.quiltingboard.com/picture...d-t169857.html
(I know it's an octagon and not a hexagon, but the tute I used called it that and so did I.)