Has anyone had any experience making one of these? For an upcoming show I had an idea of using a trapdoor for a scene or two to move some things on and off stage with. We have an apron in our theatre that has the panels that come out (either all of them or just the individual ones) as an orchestra pit. The pit, is a bit deeper than a "normal" orchestra pit, which gives us lots of room. I was thinking that we could take out a panel or two and then build a platform that fits in where the original panels were (which would be fairly easy b/c they're all almost squared) and then under the stage have the elevator part. I really don't know how to start such a project; I could build a platform, but I've never built anything like an elevator If there is any online documentation that anyone knows of, or if you got any suggestions let me know. If there is a book that's worth reading that has some documentation, give me the name too. I'd like this thing to opperate smoothly (duh - nobody suddenly propelled into the air from the orchestra pit ) and tips and suggestions on that would be good too. Anyone made one? Thanks!