Voronator

What is Voronator?

Voronator is a free browser tool that turns a 3D model you already have into an open Voronoi lattice. It cuts irregular, cell-shaped holes across the surface and keeps a web of struts with a set thickness, so a plain bowl, bust or figurine comes back looking like an organic cage. You do no modeling yourself: upload a file or paste a link to one, pick a few options and wait about a minute. The page itself is titled Voronoization Online.

The upload takes STL, OBJ, PLY, OFF, DAE and 3DS files up to 20 MB, and if you leave it empty the tool runs on a sample mesh. The advanced options offer fewer, standard or more holes and a thinner, standard or thicker strut layer. Results come as binary STL or PLY. PLY is preselected because the files are smaller, but STL is the safer pick for most slicers. Skip the 'Plane only' thickness, since the site warns it gives a surface that cannot be printed.

It suits makers who want a decorative take on a vase, bowl, animal figure or scanned bust. Results depend on the input: the site says thin or very convoluted models do not work, and apart from a 2023 privacy update it shows few signs of recent work.

What you can make

• Voronoi lattice versions of your own STL or OBJ models
• Open-cell bowls, cups and vases
• Decorative figurines and busts with a cage look
• Lattice versions of 3D scans

How to use Voronator

1. Open voronator.com and upload an STL, OBJ or other mesh up to 20 MB, or paste a link to one
2. Click 'Show advanced options' and set the output format to STL
3. Pick fewer or more holes and a thinner or thicker layer, avoiding 'Plane only'
4. Press Start, wait about a minute and download the result
5. Open it in your slicer and check for broken areas before printing