Hi Psygorn,

re:
> But I saw an artifact! take a look at below image.

It appears to possibly be just a display mesh artifact, if you export out the export mesher works fine there. So just ignore that display artifact.


re:
> But it is not a solid object. it is a joined object. So, if I can rectify this issue I would be able to
> create a Linked star in MOI :-)

Well it's pretty easy to see why it's not a solid, the end pieces are missing:



If you draw a line down the middle:



You can then select the line and edges like this and use Construct > Planar to build a cap there:



Use Edit > Join after those have been created to join the caps to the main piece to make a solid.

- MIchael