Here are the pictures of the knife hinges on my cabinet. Actually it looks like a modified knife. I did not purchase these. I removed them from the old metal cabinet that had these mirrors and built new "guts". The picture shows the left bottom, and top right with both doors open. I think it would be possible to make the bracket that attaches to the base and a modified knife hinge. Didn't look long, but Lee Valley had knife hinges that were very expensive. From the right picture it could be possible to make the whole thing perhaps using angle brace.knife1.jpgKnife2.jpg