Fracture tool cut hollow mesh to blocks instead of surface pieces

International
,
1

I created a cylindar inside UE using the built-in Modeling tool, then I removed the top face using TriSel tool. Then I created a simple Uniform fracture. Now, the problem is that, my hollow cylindar was turned into several blocks. How can I fracture my mesh into just surfaces?

2

Never mind, I found that fracture tool will add surface so that shapes are ‘closed’
So as long as I add ‘thickness’ to my geometry, everything is working fine