Why are some of my glass surfaces rendering solid?

[Anonymous]

I am trying to render this cube with one-way mirrors on each of the six faces. I saw on another forum post that a one way mirror can be achieved by setting one face as glass, and the other as mirror. On all 6 sides I did this, with the mirror face on the inside and the glass face on the outside, so that you could see through into the cube. For some reason, only the top face seems to be rendering properly. It renders the inside correctly, as if each inner face has a mirror, but the outside side faces appear completely opaque. Is there a way to fix this so that all the sides appear transparent through the outside face?

[ClintBrown3D]

Hi @Anonymous 

I have a suggestion, please share your model with the community as well as the forum post that you referenced in your question, perhaps one of our users will be able to help you if there is more information to go on.