Mesh Extender for Blender

Mesh Extender is a fast, interactive modeling tool for extending mesh geometry along the local X, Y, and Z axes.

Instead of manually cutting, moving, and bridging geometry, simply activate the tool and drag its custom viewport handles. The mesh is split through its center, both sides move symmetrically in opposite directions, and the space between them is automatically bridged, while preserving existing edge properties.

Key Features
Interactive extension in the Viewport
Extend along the local X, Y, and Z axes
Combine multiple axes in a single session
Add or remove edge loops with Right Mouse Button drag
Press W to toggle wireframe manually
Preserves Sharp, Seam, Crease, Bevel Weight and Freestyle  properties

Installation
Drag and drop the downloaded ZIP file directly into the Blender viewport, then confirm the installation.
Alternatively:
Go to Edit → Preferences → Add-ons
Open the top-right menu and select Install from Disk
Choose the AP_MeshExtender ZIP file and confirm
Enable AP | Mesh Extender if necessary

Preferences

Open Edit → Preferences → Add-ons and expand AP | Mesh Extender.

Show in N-panel - Shows or hides the Mesh Extender tab in the 3D Viewport sidebar.

Hotkey - Customize the activation shortcut. The default shortcut is Ctrl + Alt + E. 

Workflow

Select a mesh object
Open the Mesh Extender tab and click Extend, or press the configured hotkey
Drag a handle with the Left Mouse Button to extend the mesh
Drag the same handle with the Right Mouse Button to add or remove edge loops
Press W to toggle the wireframe overlay
Adjust multiple axes if needed
Press Space to confirm or Esc to cancel

Compatibility
Blender 4.2 or newer
Tested with Blender 4.5 LTS and Blender 5.2 LTS