I don't think that either SAT or IGES has quite the same kind of unit setup where it can be a unit system flag then with a separate additional scale factor.

I don't know why you would want to store a file that is actually in inches with the "units are millimeters" flag and then with a scale factor that converts from mm to inches but that's apparently what ViaCAD or maybe ACIS decides to do. I mean it seems easier if you want the units to be inches to set the units value to inches and then it's done. But anyway the stock MoI v2 doesn't get this kind of extra scale factor situation figured out correctly but that's been fixed up since then.

- Michael

Thanks for the feedback, Michael and everyone else.

It seems that this is just one of those problems that comes about when we exchange formats between applications.
See here for an explanation/discussion as to why ViaCAD STEP files are saved in imperial units.

http://forum.punchcad.com/showthread.php?t=732&highlight=internal+units


Martin.

Hi Martin, I can't seem to read that message until my forum registration there is approved or something.

But anyway, it was definitely a bug in MoI that MoI did not handle STEP files that used this style of unit system setting - that is fixed though with the above v2 patch for the v2 full release version, or with the v3 beta version.

- Michael