Vent: my cardboard phone stand collapsed on try 3 in my kitchen last night
The first two versions held fine but I got cocky and cut the slot 2mm too wide, so the phone slid forward and the whole thing folded flat while I was watching a video, and now I'm wondering if I should glue two layers of corrugated together for stiffness or just add little triangle braces at the base like I saw on a guy's build in Dayton.