Hi Peter, thanks for sending me the 3DM file through e-mail, I've already sent you back a reply but basically it's not a Mac-specific issue, this particular file is unusually memory consumptive and kind of sluggish generating the mesh on Windows as well.

It seems that the file has excessively dense UV trim curves in it, my guess is that probably the original STEP file had a too small value for its file tolerance labeled in its header - currently the STEP importer uses whatever tolerance is specified in the file itself when it has to do some calculations on the data (particularly when creating UV curves from the 3D edge curve data), and if the tolerance labeled in the file has been set to some kind of unusually small value it can result in strange heavy UV geometry. Anyway, that's my guess on what is happening, we can sort it out further through e-mail.

Thanks,
- Michael

非常棒的脚本，我想将这两个脚本功能加入到save as、impoet、export的文件格式中，我改怎么做？（Great script, I want to add these two script features to the default allowed file formats of save as, impoot, and export. How can I do it?）

Hi SUIYAN, please note this message thread is 12 years old.

> Great script, I want to add these two script features to the default allowed
> file formats of save as, impoot, and export. How can I do it?）

Are you maybe referring to something like the ImportPointFile and SavePointFile scripts?

(EDIT: ok yes I see those are mentioned in the 2nd message in this thread)

If so I'm sorry but there is not currently any method for a script to add functions to the regular built in SaveAs, Import, and Export commands.

So there is not any way to do that right now.

Thanks,
- Michael

HI Michael, thank you for your reply