Corner Extrude

by z01ks000 in Scripts and Addons

Corner Extrude is a simple and robust modeling tool for quickly creating corner geometry from any cross-section selection in Edit Mode. After selecting part of your mesh in Edit Mode and specifying an Active Edge, you can now use the Corner Extrude command to turn your geometry around that edge and extend it to create a geometric corner. It's really simple but kind of hard to explain, so please refer to the following visuals :)

Corner Extrude allows you to create this type of geometry on the fly and lets you avoid the extra steps that would otherwise be required to achieve similar results.

How to install?

Installation steps are standard. In Blender User Preferences > Add-ons, click Install Add-on from File...

Then browse to the file that you downloaded and install it. Then enable it.

How to add shortcut?

Go to Blender User Preferences > Input, and under 3D View > Mesh add a new hotkey with the name mesh.corner_extrude so that your entry looks something like this:

How to use?

Either use Search Menu (default Spacebar) and type in Corner Extrude or assign your own hotkey to mesh.corner_extrude

The command is designed to be used with a cross-section of your mesh, i.e. flat geometry, but I'd be interested to see if you can find other uses for it. So in Edit Mode select some geometry - can be Verts, Faces or Edges. After that switch to Edge Mode and select one Active Edge. The Active Edge will act as a hinge for the other selected geometry to extrude and rotate around.

What if my mesh doesn't have an edge that is suitable as a rotation pivot?

In some cases you have to create a temporary edge by extruding out a vertex at the desired angle. This can then be used as the Active Edge for the Corner Extrude to pivot around. Afterwards just delete the vertex and the floating edge will be removed. Here's an example of what that might look like:

Why is the resulting geometry looking uneven or squashed?

Please check the scale of the object and make sure it is uniform. Corner Extrude is currently affected by the Non-Uniform Scale ratio of the object. This will be fixed in the next version. In order to get a perfect result, please Apply the Scale of your object to its data.

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Item Rating

This item has an average rating of 5 from 5 ratings by the community.

  • Wayne Loxley about 1 month ago

    This is great, I will use this all the time. Love it!

  • Eric Leo about 1 month ago

    This saves so much work creating corbels, junctions, pipes, walls - anything where a corner is vital to symmetry. LOVE IT!

  • toomanydemons 2 months ago

    This item is very useful for creating modular sections that have corners. As a feature request, I would like to see an offset feature, such as the ability to make an extruded turn with more than one edge loop around an arbitrary point in space (the 3D cursor). This sort of added functionality would allow for wide extruded turns that would defeat Blender's oft-difficult bevel and bridge tools. In my humble opinion, this sort of added functionality would put this addon on the map. Cheers!

  • Francis Polvé 4 months ago


  • Jacek Gabis 4 months ago

    Thanks! It works. All the setup it requires is assigning a key shortcut to it.

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