Translations:Export to STL or OBJ/3/en

From FreeCAD Documentation

You can use your own FreeCAD file, but you can also create a quick test file:

  1. Open FreeCAD.
  2. Create a new document.
  3. Switch to Part Workbench.
  4. Insert a cube by clicking on Part Box/Cube.
  5. Insert a cone by clicking on Part Cone.
  6. Select both objects in the tree view.
  7. Apply a fusion by clicking on Part Fuse.
  8. Save your file.