The Cubbies : Part 4 Too Close to the Sun

This week I began my large format print of the cubbies. This print was set up with a brim and 0 infill. Unfortunately, around 25 hours the print failed as pictured below. As you can see in the photo, the print deformed on the sides that stretched the longest without any bend Obviously the long sides of the print have less structure then the shorter edges. I like to think that if it had infill this wouldn't be the case but who knows. Because this print failed I had to reconsider all of my options. There was probably around 1200g of PLA used in this attempt, leaving me with too little to print another full size. I want to do a test print of the long side with infill to see if the structure will hold, but I don't want to use my PLA as I don't have enough for a test and full print. I want to use the black or white PLA at school but I'm told different PLA gets different results so I guess that makes it pointless? I am left thinking I flew to close to the sun. I'm goin...