hmmm, guess I missed that. I would assume using threaded hardware with appropriate strength, I see JC mentions turnbuckles? for his setup it should work. I guess you would have to trust the inserts would not pull through the mdf.
In regards to lighting, bias lighting has been discussed on this forum. I would never use that behind my screen, like some use for TV's, however, I disagree with JC in regards to having no ambient light anyware in the room. Idealy, there is nothing wrong with having dim lighting behind or off to the sides, not affecting your direct view of the image. Even professional theaters have rope lighting, and other dim ambient lighting. Try looking at a remote with only projector light.
