Here I can't reply as I have no experience in this. I was just giving you some ideas as I once thought making a wall and asked around what should I do. A friend of mine that has being competing for 13 or so year advised me that the best way will be to do a cage and then build the box/wall inside it. I've seen two wall builds done with a cage. One is in progress in Build Logs I cant recall thread name but he is using Sundown, one is already done by Blade Ice from UK and he has a build log here with TONS of pics and I am sure he won't ignore your PM's with questions. Hope I helped. PM: If you can't find the two threads shoots me a PM. (master seacher )