different use for your build, I race 1/5 RC cars, we have to cut an opening in the side windows to allow the cars to be picked up easily in the event of a crash etc, the bodies are made from thin lexan, the cars are heavy and the windows eventually start to tear and split, the bodies are quite thin at 2mm so I had to make a rubber gasket to take up the slack (I am very very new to 3d printing so have no idea how to modify the file) these are perfect for the job,Thanks so much