Me again. I’ve heard back from Shapeways. They say I have manifold issues and have sent me this link to help me resolve them.
Unfortunately none of the video links which are alluded to seem to appear on either my iPad or iPhone. I will try looking on a PC later. In the meantime I get the gist that either there is a hole or a hidden face, but after spotting nothing on a cursory glance I’m not sure what to do next. Any advice would be welcome
![image|666x500]I have included an image which may or may not be helpful. Happy to share the file if that is more useful. Many thanks in advance. Best wishes, Anthony