Precedence it is ! ^^

Thanks for the help everyone !

This is not a normal problem, because I tried to add->mesh->cylinder and it was black too (I don't it could have normal problems)...
The problem doesn't always occur, it seems to occur for no apparent reason.

Quite strange.

Just checked the normals, but no change...

It rendered fine just now, no apparent reason as I didn't touch anything...
I tried to render again without touching anything and it rendered black once again.

I hope there would be a way to have more stable results

Hi everyone ! I'm new to Indigo and 3d modeling and I have a lot of problems :wink: But there is especially one that is really annoying : I'm currently modeling a seringe so I have to make a tube made of glass. At first everything is okay, the render of the tube is really good, but after adding some...