Data Exchange > Interface > Working with Data Exchange Formats > Tessellated Files > Assembly STL and Assembly Inventor File Overlapping Surfaces
Assembly STL and Assembly Inventor File Overlapping Surfaces
Assembly STL and Assembly Inventor files triangulate each part of the assembly individually and place them in the same file.
If you use the STL file to create wax models, overlapping surfaces (where parts are mated) can cause problems. To avoid this, create a single part by merging all of the assembly components, then create an STL file in Part mode.