Overview

The Corner Sharpener add-on allows you to sharpen the corners of 2D and 3D objects under the subdivision modifier with just a few clicks.

Note:

This add-on saves time by automatically creating supporting edges and removing face edges—tasks that are typically performed manually with the knife tool. It works best on convex surfaces.

Important: The selected vertex or the selected vertex of edges must have exactly three edges connected to it to sharpen the corner.

Usage

2D Sharpener:

1. Switch to Edit Mode and select Vertex Mode.
2. Ensure each corner vertex is connected to two boundary edges and one face edge in the mesh.
3. Inset the face to create and connect the face edge in the mesh. If it’s already inset, you can skip this step.
4. Select the corner vertices you want to sharpen.
5. In the Tool section, select "Sharpen It" under the "SharpCorner" Tool.
6. Adjust the sharpness by sliding the Factor value.

3D Sharpener:

1. Switch to Edit Mode and select Edge Mode.
2. Ensure each corner vertex of the edges is connected to two boundary edges and one face edge in the mesh.
3. Inset the side face to create the face edge in the mesh. If it’s already inset, you can skip this step.
4. Select the corner edges you want to sharpen.
5. In the Tool section, select "Sharpen It" under the "SharpCorner" Tool.
6. Adjust the sharpness by sliding the Factor value.

Version History

• Version 2.0.0: 3D Sharpener added.
• Version 1.0.0: Initial release of the 2D Sharpener.

FAQ

Why do I need to inset the face before using the add-on on the corner vertex?

The purpose of insetting the face is to ensure that the corner vertex has a face edge connected to it. If the object you want to sharpen already has a structure with a face edge connected to the corner vertices, insetting is not necessary.

Can I select a face to sharpen corners?

No, don't select faces. Either select a vertex for the 2D sharpener or edges for the 3D sharpener.

What is a corner vertex?

A corner vertex is defined as a vertex that is connected to two boundary edges and one face edge in the mesh.