Changes

===Working with STL & FACET Models===

Stereolithography (STL) files contain a tessellated (triangulated) representation of a geometrical structure. CUBIT FACET files are used to store surface mesh data. [[EM.Cube]] treats STL and FACET files in a special way. You can export the physical structure of your project workspace into a STL or FACET file in the form of a polymesh objectobjects. The Your physical structure is tessellated for export using CubeCAD's triangular surface mesh generator. Therefore, you can use CubeCAD's mesher to see and examine how your physical structure is going to be exported and will look like before you export it. [[EM.Cube]] gives you two options for STL export: '''Binary STL''' and '''ASCII STL'''. The latter file is bigger in size. You can import STL files of both binary and STL types into [[EM.Cube]]. Both STL and FACET models are imported as native polymesh objects. As a result, you can edit the imported objects and modify their various parameters arbitrarilyas you like. This is different than importing the import of files of other formats, which always create generic solid and surface objects of the generic type. Just like other polymesh objects, you can insert nodes on the faces and edges of the imported object or delete some of its nodes. Note that some objects might be imported to CubeCAD in a freeze state, and you need to unfreeze them before being able to edit their properties. {{Note|FACET files are always expressed in meters. Therefore, before importing a FACET file, you should change the project units to meters.}}