Thanks for the answer, I figured it was thickness problem, so fixed it with cloth surface. I didn't notices that open border, i will go back and fix that. Thanks for your inputs, you were very helpful.
Hi, I'm trying to make this beer cap in C4D and when I export .OBJ I get this weird transparency issue. I tried aligning normals but it didn't do the trick. :( In the image below you can see what am I referring to. Any suggestions?