Tool Settings¶

Options¶

Reference

Mode:: Edit Mode
Panel:: Sidebar ‣ Tool tab ‣ Options panel

Transform¶

Correct Face Attributes: Adjust geometry attributes like UVs and Color Attributes while transforming.

Keep Connected: Merge attributes connected to the same vertex while using Correct Face Attributes.

Tips

Keeping UVs connected is useful for organic modeling, but not for architectural modeling.

Mirror¶

The Mirror options enable symmetric transformations of mesh elements (vertices, edges, or faces) along the selected axis. When an element is transformed, its exact mirrored counterpart (in local space), if present, is transformed correspondingly to maintain symmetry.

For the Mirror tool to function correctly, mirrored vertices must be precisely aligned with their counterparts. If vertices are not accurately positioned at their mirror locations, the Mirror Axis will not recognize them as mirrored. For meshes with visual symmetry but differing topology, enabling Topology Mirror can address this limitation.

Merknad

Strict alignment requirements can make Mirror challenging to use. The Mirror Modifier offers an alternative, automatically handling symmetry.

Topology Mirror¶

Topology Mirror determines mirrored vertices by analyzing their relationships with other vertices in the mesh, rather than relying solely on vertex positions. By evaluating the overall topology, this feature allows non-symmetrical vertices to be treated as mirrored.

Topology Mirror requires at least one Mirror Axis to be enabled.

Tips

Topology Mirror is most effective with detailed geometry. Simple meshes, such as cubes or UV spheres, may produce inconsistent results.

Example

This example demonstrates how to use Topology Mirror effectively:

Open a new Blender scene. Delete the default cube and add a Monkey object in the 3D Viewport.
Press Tab to switch to Edit Mode.
Disable all Mirror axes and move one of the Monkey object’s vertices slightly.
Enable the X Axis Mirror option but leave Topology Mirror disabled. Move the same vertex again. The X Axis Mirror will not affect the mirrored vertices, as they are not perfectly aligned.
Enable Topology Mirror and move the same vertex once more. The X Axis Mirror will now mirror the other vertex, even though they are not perfectly positioned.

Auto Merge¶

Reference

Mode:: Edit Mode
Menu:: Sidebar ‣ Tool ‣ Options ‣ Auto Merge

When enabled, as soon as a vertex moves closer to another one than the Threshold setting, they are automatically merged. This option affects interactive operations only (tweaks made in the Adjust Last Operation panel are considered interactive too). If the exact spot where a vertex is moved contains more than one vertex, then the merge will be performed between the moved vertex and one of those.

Split Edges & Faces: Detects the intersection of each transformed edge, creating a new vertex in place and sectioning the edge and the face if any.

Threshold: Defines the maximum distance between vertices that are merged.

UVs¶

Live Unwrap: Automatically recalculates the UV unwrapping every time an edge has its seam property changed. Note, this is different than the Live Unwrap option in the UV Editor.