FreeCAD also supports file formats like STL and OBJ, which are the standard file formats for 3D printing. Cura is by far the most popular 3D slicer available and supports most of the standard FDM ...

If you’ve ever wondered why designers like to work with STEP files and not STL, this video answers that question immediately. A part brought in from a STEP file is closer to the original CAD object.