Making a product label, front and back opacity

[Pepelecrabb]

I need to make a bottle label with rounded corners. Label on front, solid on back. I don't know what I am missing.

I need this with white on the back. If I select front and back normals for a material the opacity works fine but I get the same material on front and back. If I use 2 separate materials for front and the back respectively, the opacity only works in one direction.

I've tried applying label to polys on the bottle like I usually do, or seperated polys from the bottle, and also adding some thickness, and using a layered material.

[Beanzvision]

Perhaps this article will help you?
https://help.c4d.corona-renderer.com/support/solutions/articles/12000044906-how-to-create-a-2-sided-layered-material-with-corona-renderer-in-cinema-4d

[Pepelecrabb]

Thanks Ben, That works in the long run. I looked all over for the Normal Direction. I read another article here that called it a tag not an effect.

It doesn't work when I apply the layered material on top of the glass polys selection, only when I separate those polys on their own and add layered material.

[Beanzvision]

Can you resubmit your scene file to our private uploader? When saving, use 'save project with assets' this will ensure your artwork is there also as it was missing from the first file you shared. ;)

Uploader link is in my signature below. Cheers.

[Pepelecrabb]

Thanks Bengamin, Done.

[Beanzvision]

Thanks for the file, I had a look and this seems to be an old issue that was reported a while back. For now, I would suggest using the split geometry method that you have in the second file you uploaded.