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1. 8. Blender software.
Bisect. Delete & Dissolve
Assoc. Prof. Dr. Eng. Tihomir Dovramadjiev
Technical University of Varna
MTF, Department Industrial Design
tihomir.dovramadjiev@tu-varna.bg
DOI: 10.13140/RG.2.2.33484.05766
https://www.researchgate.net/publication/328643110_8_Blender_software_Bisect_Delete_Dissolve

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About Blender software
● Blender is the free and open source 3D creation suite. It
supports the entirety of the 3D pipeline—modeling, rigging,
animation, simulation, rendering, compositing and motion
tracking, even video editing and game creation.
https://www.blender.org/
● Modern accessible application of the system Blender in 3D de-
sign practice.
https://www.researchgate.net/publication/312033613_Modern_a
ccessible_application_of_the_system_Blender_in_3D_design_p
ractice

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Bisect
The Bisect tool is a quick way to cut a mesh in two along a custom plane.
Use LMB (Left Mouse Button) click and drag to draw cut line. Once the cut is done the Operator
panel gives a few options.
Plane Point, Plane Normal
● The plane can be numerically adjusted for precise values.
Fill
● Cuts can optionally fill in the holes created, with materials, UV maps, and vertex colors based on
the surrounding geometry.
Clear Inner, Clear Outer
● Cuts may remove geometry on one side.
Axis Threshold
● Cut along the straight plane or along the existing geometry below the distance from the plane.
● Blender User Manual.Release 2.78. Blender Community. Mar 08, 2017
https://docs.blender.org/manual/en/dev/modeling/meshes/editing/subdividing/bisect.html - CC-BY-
SA 4.0 Int. License

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Bisect – Example 1
Edit Mode / Front and Ortho View

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Bisect – Example 1
Using Bisect tool (Handy)

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Bisect – Example 1
Using Bisect tool – In progress

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Bisect – Example 1
The Result (Bisect: Clear Inner)

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Bisect – Example 1
The Result (Bisect: Clear Outer)

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Delete
Delete: Reference – Hotkey: X, Delete
● Deletes selected vertices, edges, or faces. This operation can also be limited to:
● Vertices. Delete all vertices in current selection, removing any faces or edges they are connected to.
●
Edges. Deletes any edges in the current selection. Removes any faces that the edge shares with it.
● Faces. Removes any faces in current selection.
●
Only Edges & Faces. Limits the operation to only selected edges and adjacent faces.
●
Only Faces. Removes faces, but edges within face selection are retained.
● Blender User Manual.Release 2.78. Blender Community. Mar 08, 2017
● https://docs.blender.org/manual/en/dev/modeling/meshes/editing/basics/deleting.html#dissolve - CC-BY-SA 4.0 Int. License

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Dissolve
Dissolve operations are also accessed from the delete menu. Dissolve will remove the geometry and fill in the surrounding geometry. In-
stead of removing the geometry, which may leave holes that you have to fill in again.
● Removes selected geometry, but without creating holes, effectively turning the selection into a single n-gon. Dissolve works slightly different based on
if you have edges, faces or vertices selected. You can add detail where you need it, or quickly remove it where you do not.
● Blender User Manual.Release 2.78. Blender Community. Mar 08, 2017
● https://docs.blender.org/manual/en/dev/modeling/meshes/editing/basics/deleting.html#dissolve - CC-BY-SA 4.0 Int. License

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Dissolve
Dissolve Vertices
Remove the vertex merging all surrounding faces. In the case two edges, merging them into a single edge.
● Face Split. When dissolving vertices into surrounding faces, you can often end up with very large, uneven n-gons. The face split option limits dis-
solve to only use the corners of the faces connected to the vertex.
● Tear Boundaries. Split off face corners instead of merging faces.
Dissolve Edges
● Removes edges sharing two faces (joining those faces).
● The options are the same as for the Dissolve Vertices tool.
Dissolve Faces
● Merges regions of faces that share edges into a single face.
● Note. This can be accessed quickly using the F key, see: Dissolve Existing Faces.
● https://docs.blender.org/manual/en/dev/modeling/meshes/editing/basics/make_face_edge.html#modeling-mesh-make-face-edge-dissolve
Dissolve (Context-Sensitive)
● This is a convenient shortcut that dissolves based on the current selection mode (vertex, edge, face).
Limited Dissolve
● This tool can simplify your mesh by dissolving vertices and edges separating flat regions.
●
Max Angle. Reduces detail on planar faces and linear edges with an adjustable angle threshold.
● All Boundaries. Always dissolve vertices that have two edge users at boundaries.
●
Delimit. Prevent faces from joining when they don’t share certain properties (material for e.g.).
● Blender User Manual.Release 2.78. Blender Community. Mar 08, 2017
● https://docs.blender.org/manual/en/dev/modeling/meshes/editing/basics/deleting.html#dissolve - CC-BY-SA 4.0 Int. License

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Dissolve Faces – Example 2
The Cube (Edit Mode). X 3 Subdivide

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Dissolve Faces – Example 2
The Cube (Edit Mode). Selected Faces (Handy)

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Dissolve Faces – Example 2
The Cube (Edit Mode). Mesh > Delete (“X” key) > Dissolve Faces

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Dissolve Faces – Example 2
The Result

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Dissolve Faces – Example 2
Extruding selected face (“E” key)

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References
● Blender Software
https://www.blender.org/
● Tihomir Dovramadjiev PhD. Modern accessible application of the system Blender in 3D design practice.
https://www.researchgate.net/publication/312033613_Modern_accessible_application_of_the_system_Blender_in_3D_design_practice
● Blender User Manual.Release 2.78. Blender Community. Mar 08, 2017
● Blender / Bisect
https://docs.blender.org/manual/en/dev/modeling/meshes/editing/subdividing/bisect.html - CC-BY-SA 4.0 Int. License
●
Blender / Make Edge/Face
https://docs.blender.org/manual/en/dev/modeling/meshes/editing/basics/make_face_edge.html#modeling-mesh-make-face-edge-dissolve
- CC-BY-SA 4.0 Int. License
●
Blender / Deleting & Dissolving
https://docs.blender.org/manual/en/dev/modeling/meshes/editing/basics/deleting.html#dissolve-vertices - CC-BY-SA 4.0 Int. License
Apace OpenOffice
http://www.openoffice.org/download/