Split STL files into smaller sections so you can cut and scale a part before actually opening it.
Splitting a files enables you to load only a section of the part, which can save time, or scale an object before opening it to reduce its file size.
- Click
File > 
Split Large STL Part.
The STL Decomposition dialog box opens. Information about the file is shown under STL Information, including the size of the outbox, which is a cuboid space enclosing the part along the cardinal axes.
- Adjust values as needed.
- Click Create Decomposition.
The part is scaled and split according to your settings and new STL files are created, consisting only of the respective sections of the original part. The sections are saved as files separate from the original and you can open and work on them individually.
Note: This tool operates independently from the current project. After the decomposition has been created, it closes and returns you to the project you had opened.