This Blender addon provides an alternative smoothing operation with NEW Blender 4.3+ compatibility and N-Panel integration. Conventional smoothing has a tendency to cause pinching, bumps, and other undesirable artifacts; however, mesh fairing results in a smooth-as-possible mesh patch.

• Blender 4.3+ Compatibility: Updated for the latest Blender versions
• N-Panel Integration: Easy access via the Tools panel (press N)
• Quick Actions: Fast access to common operations with saved settings
• Enhanced UI: Modern interface with contextual controls
• Better Property Management: Improved settings persistence

1. Download the addon files
2. Open Blender 4.3 or later
3. Go to Edit > Preferences > Add-ons
4. Click "Install..." and select the addon folder
5. Enable "Mesh: Mesh Fairing"
6. Install dependencies (NumPy/SciPy) via the N-panel

1. In the 3D Viewport, press N to open the side panel
2. Navigate to the "Tool" tab
3. Find the "Mesh Fairing" panel
4. The panel adapts to your current mode (Edit or Sculpt)

Mesh fairing is also available in both Sculpt and Edit modes via the traditional menus:

Mesh fairing displaces affected vertices to produce a smooth-as-possible mesh patch with respect to a specified continuity constraint.

• Continuity: Determines how inner vertices blend with surrounding faces to produce a smooth-as-possible mesh patch

  • Smooth: Simple Laplacian smoothing that averages neighboring vertices. Provides traditional mesh smoothing without bulging effects.

  • Position: Change in vertex position is minimized.

  • Tangency: Change in vertex tangency is minimized.

  • Curvature: Change in vertex curvature is minimized.

Mode-specific options also exist to affect the outcome of mesh fairing.

• Invert Mask: If this option is enabled, mesh fairing is applied to masked vertices; otherwise, only unmasked vertices are affected.

• Triangulate: Triangulates affected region to produce higher quality results

The addon works best with NumPy and SciPy installed. Use the dependency installation buttons in the N-panel, or install manually via Blender's Python console:

import subprocess import sys subprocess.check_call([sys.executable, "-m", "pip", "install", "numpy", "scipy"])

Blender ships with NumPy, but it is highly recommended that users install SciPy. Mesh fairing with the latter is much faster and less prone to crashing.

Here are a few examples that demonstrate the usefulness of mesh fairing:

1. Blend between sections of geometry.

   

2. Remove surface features.

   

3. Create interesting shape keys.

   

• For best results in Edit mode, select a coherent region of vertices
• In Sculpt mode, use masks to define the area to be smoothed
• Start with Position continuity and increase to Tangent or Curvature for smoother results
• Enable Triangulate for higher quality results on complex geometry
• Use the Quick Fair button in the N-panel for rapid iteration

• Addon Author: Brett Fedack

• David Model: 3D scan of Michelangelo's David provided by Scan the World initiative

• Monkey Model: Suzanne is Blender's mascot who we've all come to know and love.

• Other: Special thanks to Jane Tournois whose mesh fairing implementation for CGAL proved highly instructive in designing this addon