Cineversity

hello again!

I have a dodecahedron that I am putting in a Voronoi fracture.  I would like to have a tiny bit of thickness to it, not the big chunky pieces that Voronoi Fracture creates.
So I tried two things that didn’t work

1/Create a slight extrusion to an editable version of the dodecahedron.  If I put that as is in the Voronoi fracture, I still get chunks
2/If do the same thing, but with “hull only”, I get chunks without any thickness.  Here I tried a cloth object, but it messes with the topology too much…

Are there any other ways I can do this?

Thanks!

Hi Alex,

Have you tried the Hollow option?

https://help.maxon.net/us/#OMOGRAPH_FRACTUREVORONOI-ID_OBJECTPROPERTIES

All the best

Yes, it doesn’t seem to work for a platonic primitive…Even made editable…

Hi Alex,

Please have a look into the link above, it certainly clears some parts.

Find attached three completely different versions how it can be done:
https://www.amazon.com/clouddrive/share/NQKblNdgKjd7CKMGlVQDfjgwYfcNSEyBOUvHVPFv4Uo?ref_=cd_ph_share_link_copy

File _03 seems to be the most stable, but also perhaps for larger set ups slower.

Each and every file was tested very carefully. There are of course many ways to create the editable way, i.e. to create the body shown in the link in post #1.

In some rare cases the offset destroyed the “sides” of the chunks, a little dial on the seeds value has helped to heal this so far.

As a sidenote: if you like to add thickness via the Cloth Surface, set the subdivision to zero.

Have a great start into your week.

Ha, super interesting techniques!  Of course the cloth object, which I tried, but forgot to set the subdivisions to 0! 
And the Explosion FX is a great idea to.  The only one I didn’t understand was the one with the “corrected normals”.  What did you do in that case?

Thanks Sassi!  I have to say that having you answer questions on this forum is the most valuable aspect of a Cineversity subscription!  The tutorials are great, but I’ve been able to make so much faster progress on my projects thanks to your super helpful answers.

Thanks again!

Thanks, Alex, for the nice feedback.

The image in the link showed that all Normals of a hollow object should face into the same direction. That is normally a given, but it doesn’t matter sometimes. That the image showed the Normals, made me explore it for this case.

So the Normals from the inside to the inside, and the surface Normals to the outside.
Tests have shown, if that is not a given, the amount of problems rises drastically.

Set the Object to X-Ray so the Normals from the inside become visible.
Since it is a two mesh object, the Align Normals might not work always.
So, select them all, reverse them if the inside is wrong.
Then deselect all, select on on the outside and use Select Connected.
Reverse until they point out.
Now the object is well prepared, and more pro like to work with.

All the best

Understood, and that makes total sense.  So by combining two platonics of different sizes and inverting the normals on the “inside” one, you effectively create a hull…!  Great technique!

If I had time I would record short quick tips of all this stuff, really great information.

Thanks again Sassi!

You’re very welcome, Alex.

Yes, quick tips, I thought to create one of my one minute clips for this question…,
Last year I did over 130 clips for this forum, perhaps tomorrow I can do one with different ways to create a hollow object.

Enjoy