Voronoi patterns make interesting, organic looking models. Add a Voronoi pattern to any .STL or 3D model that will import into Autodesk Meshmixer by reducing polygons and applying the [Dual Edges] pattern. Read more about Voronoi diagrams on Wikipedia. Download Meshmixer for free here.



*View All Steps for Screen Shot Instructions*

See more print examples in our previous Instructable: "Little Dipper" SLA/DLP 3D printer.

Intro

Voronoi patterns consist of lines connecting points that are the centers of circles which intersect with the model's triangle mesh to create a tube like structure replacing the original polygons. Read more here: (wiki) Delaunay triangulation. Apologies in advance if I've misstated the concept. Math wizards, feel free to comment :)



These patterns can provide consistent horizontal cross sections for slices that might be helpful when using SLA / resin 3D printers. Voronoi models can print well on most Fused Filament 3D printers.

Step 1: Import Model and Reduce Polygons

1) Import model into Meshmixer [Import icon] or [file] > [Import]

2) Select entire model using keyboard Ctrl+a or use the [select] tool to click-drag certain parts you want to edit.

3) Click [Edit] > [Reduce] (Menu appears at top after selecting).

4) Increase the percentage slider or change drop down to lower triangle / polygon count. Less polygons result in larger openings in your final model. It may help to try a very low polygon count.

5) click [accept].

Step 2: Apply and modify the Pattern

1) Click [Edit] menu icon > [Make Pattern]

2) Change the first drop down to [Dual Edges] (pattern using exterior only) or [Mesh + Delaunay] Dual Edges (generates pattern inside model). Changing [element dimensions] will make thicker or narrower tubes.

3) To save model: File > export .STL

*Adjusting certain pattern settings may require intensive CPU usage.



*After clicking accept, you may want to reduce the new mesh polygons slightly for easier 3D printing or importing into other programs.



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Comment and enjoy!

Thanks!

-Marshall P.

ProtoBuilds.com



Model credit:

Non-Voronoi Bear on Thingiverse, modified for this Instructable.

Voronoi Body on Thingiverse

Non-Voronoi Bunny pre-loaded with Meshmixer, modified for this Instructable.