Quote Originally Posted by 3dkarma View Post
See the blue highlighted bits below? You've got some holes in your mesh.

Screenshot 2014-06-26 23.37.01.jpg
Thanks for that. I had been all over it looking for the problem but when I stick it at the same angle as your picture I can see them. As the upper set and the lower set are just copies of each other then it must be a bug in Freecad.
This is indeed disheartening as I will have to redraw it in something else. :bawling: