At the big 3D Print Week event last month in New York City, Hewlett-Packard (HP) alluded to a big announcement related to 3D Printing file formats. A week later, at the Build 2015 event, Microsoft ...

An imported STEP file is converted to a triangle mesh on import (making it much like a typical .stl or .3mf file) which means that slicing all happens as one would normally expect.