Hi Sebastian, in e-mail you mentioned that it did finally export out of MoI but only after letting it sit overnight.

So it appears to be not a crash or actual lock-up bug but a performance issue, my guess is that it probably has something to do with this particular situation of having a high number of trim curves contained within a single surface.

I'll investigate it, but I'm not sure yet when that will lead to a solution, it may take a variety of different tests and also some back and forth with the author of the I/O libraries that MoI actually uses to do the export. It's something that will need tuning in the library, not in MoI's own code directly.

So I probably won't have an answer for you right away on why the export from MoI for this model takes so long, but I will try to find out what is happening and if it can be improved though.

In the meantime some of the methods that I described above can probably help to get your work done now - try doing the holes in Alibre, or try using 3DM import into Alibre with the settings as I showed above.

- Michael