Ernestov that is a great idea! and something that I have been considering. I am actually making the steel frames myself. I am going off of Roger’s design, but you are right – there has got to be a better way to secure the panel to the steel tubes. I do not have the panels yet so I do not have a clear idea of what I might be able to do with them. Would you mind sharing your idea/experience on what you did. Maybe we could discuss this over the phone. You input would be greatly appreciated.