How to create a "hollow" glass tube I am working on a cathode ray tube (CRT) based off of an original model. Is there a way to make a glass object (the tube) hollow? In reality, the tube is not filled with glass, so the glass shader default does not yield a good result. I have tried extruding the faces of the mesh a tiny bit inwards, but the result is that the mesh is distorted on the inside. I also tried duplicating the mesh, and scaling it down a tiny bit, but then I have to set the IOR of the shader to something really low, like 1.05. Is there a node setup, or just some kind of way to model your object so that you can render it like a thin glass tube? I would need to see the inner glass, though, like on here. 


My render.
Perhaps something like this is closer to what you're looking for?



I think this is pretty close to what you've used, but feel free to check out what I've done here.

Transmission = 1

IOR = 1.05

Roughness = 0.167