Hello, I noticed that when i try to shatter a geo that I created by extruding a surface with polyextrude, it simply doesn't work (won't shatter). If I use Extrude volume on the other hand, it works just fine. Am I missing something or is this a bug?

Thanks!

Seconded. One problem I've noticed that the Boolean inverts polyextrude output when one sets a negative “Distance” value on the poly extrude. Expected behavior would be for the polyextrude to always output correct winding order as there is nothing strange of wanting to extrude a polygon downwards. (#82897)

with polyextrude, did you forget to Output Back ?

vusta
with polyextrude, did you forget to Output Back ?

I had output back on.

Would need to see the geometry, but there are a few rules for making sure you have clean geometry that is good for boolean fractures.

Midasssilver
Would need to see the geometry, but there are a few rules for making sure you have clean geometry that is good for boolean fractures.

Here is a simple grid extruded. Turns out what Henriksson mentioned was the problem. When doing a negative extrusion, it doesn't work.

When you do a negative extrusion just add a reverse sop after to change the normals.

Then it will work.