Hi skateboardkid, now that I read your message more carefully I see that you did already try using separate surfaces and that you got that big 1.4 Gig file when doing that.

That is due to a problem that MoI v1 has in dealing with an IGES file that has many solids in it instead of only 1 solid in it. MoI v1 gets confused when it tries to join all those surfaces into solids, it can mistakenly try to join pieces together that came from adjacent touching solids and that can make a big mess.

That is fixed in MoI v2 - in MoI v2 only surfaces that belong to the same "level" in the IGES file are attempted to be joined to one another.

For MoI v1 you are best off exporting only one part at a time instead of exporting multiple parts into one single IGES file.

It is also possible to turn off automatic joining on import, in MoI v2 it is a setting in the options dialog, but in MoI v1 it is in the moi.ini file only.

- Michael