Translations:Import from STL or OBJ/6/en

Harmonizing normals
Harmonizing normals of a mesh object can be done by Tip: By choosing the mesh object in the tree view, going to the view tab in the property view and changing "Lighting" from "Two Side" to "One Side" you can identify triangles with flipped normals. If the normals point into the mesh the triangle will be shown in black.
 * Selecting your mesh object in the tree view
 * Choose  →   from the top menu.