Wings3D supports importing STL. PLY and OBJ and Wings3D is FREE.

Blender3D is also FREE and supports STL, PLY and OBJ as well.

https://www.wings3d.com/

You could also import your OBJ into Blender and then use the excellent Blender to Moi Addon which must be installed on both Blender and Moi3D. I've used it and it works fine.

Here is a thread on this must have plugin

https://moi3d.com/forum/index.php?webtag=MOI

Sorry but the above link does not seem to work. I am uncertain how you post a link to a thread here. I do not have this issue on other forums, so I posted a remark in the thread to make it current.

I hope that helps.

Hi Kenmo,

To grab the link to a posting or thread, use the link at the upper right corner, the one with the thread & article numbers.

Here's the thread you were referencing: https://moi3d.com/forum/index.php?webtag=MOI&msg=11634.1

--Larry

Thanks for links and suggestions. I'm still learning the basics of the scanner right now, but I'll take a look at the import options again when I have something useful to import.