Quote Originally Posted by old man emu View Post
Ahh! Then the problem is likely to have its origin in you drawing. Is it possible to go through the drawing history in Sketchup to see it you can see an error?

I have had a look at your file using Rhino 5 and saw that all the elements had not been joined to make one object. I joined them and produced the attached stl. Try slicing it.

OMEs repair attempt.stl


Old Man Emu
Thanks ill try that when I get home.

Here is the sketchup file too if it helps:

https://db.tt/s8NGmYwA