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KeyShot Studio

Flip Normals

The Flip Normals tool allows you to automatically or manually reverse the direction of the normals on an object by selecting its faces.

Last updated 3 August 2026

The Flip Normals tool allows you to automatically or manually reverse the direction of the normals on an object by selecting its faces.

A normal is the direction that is perpendicular to a mesh surface. In a 3D model, the normals should all be facing the same direction, otherwise “holes” might appear. Also if your vertex normals are not aligned, flat spots might appear on what was intended to appear as a curved surface.

How to Flip Normals

You can launch the Flip normals Flip Normals tool either via the Tools section in the Ribbon or via the context menu in the Real-time View or the Scene tree.

KS flipNormals EN
  1. Preview
    The preview shows the object you have selected to flip normals on. If you have an object currently selected in the preview, it will be shown in green, and the normals can be edited with the Edit Selection section.
  2. Auto Align Normals
    Pressing the Auto Align Normals will attempt to align your normals automatically.
  3. Edit selection
    In the Edit selection section you can flip normals on specific parts of your object.
  4. Show Face Normals
    Enable this to show the normals of the object. The height of the normals can be adjusted with the slider.
  5. Apply/Cancel
    To finalize the flip normals, click Apply, to cancel the operation, click Cancel.

Close Mesh

If you have a polygon with a holes in it you can use Close Mesh to fill in missing polygons or close the gab between holes.

Tools

Edit Normals

If your model appears to have a hole or flat areas, the Edit Normals tool can help you to unify the normals.

Tools

Light Layers

Light Layers allow you better control over the direct lighting in your scene. You can simply create a Layer with a set of lights and specify which part(s) should be affected. This can be very useful if you want a highlight on a specific part without affecting the rest of your scene. You can access Light Layers via:

Tools

Light Positioning

The Light Positioning tool can be triggered in different ways:

Tools

Match Perspective

Perspective Matching helps you interactively match the Perspective camera to the camera angle with which a background image was taken.

Tools