Quote Originally Posted by MANICX100 View Post
Yep fixed top and bottom in netfabb. Not sure what side cut is trying to show. Am printing again on side with full supports to see if that helps.

Have tried refining mesh - as the part that prints as a large hole is in the wire-frame a mass of triangles no avail yet though

Thanks for the help guys
The side cut shows the reason for the holes. In that spot, your mesh overlapped itself. (self intersecting non-manifold geometry) think of a Klein bottle.