by Johnbogle·Modeling
Illustrative cover generated by AnyPlugins — no product screenshot available.
Version 2.0.0 added the 3D Sharpener alongside the original 2D Sharpener released in version 1.0.0.
Corner Sharpener 2D & 3D is a Blender add-on from Johnbogle that sharpens the corners of 2D and 3D objects placed under the subdivision modifier, taking just a few clicks. It automatically creates supporting edges and removes face edges, work that is otherwise done by hand with the knife tool. The add-on works best on convex surfaces.
Sharpening happens in Edit Mode. The 2D Sharpener runs in Vertex Mode and the 3D Sharpener in Edge Mode, and each corner vertex needs exactly three connected edges: two boundary edges and one face edge. If the face edge is missing, you inset the face or side face to create it. You then select the corners, choose "Sharpen It" under the "SharpCorner" tool, and slide the Factor value to control the amount of sharpening.
The add-on covers Blender 3.0 through 4.2 and is released under the GPL license. Version 1.0.0 introduced the 2D Sharpener, and version 2.0.0 added the 3D Sharpener. Demo videos are available.
Corner Sharpener 2D & 3D is best for blender artists working with subdivision-modifier meshes who want to sharpen corners on convex surfaces.
Corner Sharpener 2D & 3D is completely free to download and use.
Corner Sharpener 2D & 3D lists compatibility with Blender 4.2, 4.1, 4.0, 3.6, 3.5, 3.4, 3.3, 3.2, 3.1, and 3.0, so recent 4.x releases and older 3.x versions are all covered. The 3D Sharpener arrived in version 2.0.0, while version 1.0.0 was the initial release of the 2D Sharpener. If you are on a version outside that list, check the developer's page to confirm current support before installing.
Corner Sharpener 2D & 3D requires the selected vertex, or the selected vertex of edges, to have exactly three edges connected to it. Each corner vertex should connect to two boundary edges and one face edge in the mesh. If that face edge is missing, you inset the face for 2D or the side face for 3D to create it, then skip that step if the mesh is already inset. The add-on works best on convex surfaces.
Corner Sharpener 2D & 3D works in Edit Mode. For the 2D Sharpener, switch to Vertex Mode and select the corner vertices you want to sharpen; for the 3D Sharpener, switch to Edge Mode and select the corner edges. In the Tool section, choose "Sharpen It" under the "SharpCorner" tool, then adjust the result by sliding the Factor value. Along the way it automatically creates supporting edges and removes face edges for you.
Corner Sharpener 2D & 3D is listed as free in this catalog and is released under the GPL license. Licensing terms can change over time, so check the developer's page for the current pricing and license details before you download. The add-on has been published for almost two years, and its version history shows the 2D Sharpener shipping first, followed by the 3D Sharpener in version 2.0.0.
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