Great question — answering as the UphillTech team:
While there is some possibility it could work, I wouldn't even try it. There are things that can go wrong, and many proven solutions to the problem. Replacing a bad hack (newspaper) with a worse hack (cardboard box) is not something I would be keen to try. A list of preferred solution includes: use cake strips bake the cake in a different pan (bundt or thick-walled ceramic pan) go for a flatter and wider cake (bake it in a quiche pan or a large tawa) make it a layered cake and bake the layers separately reduce the temperature and bake for longer partially bake in a waterbath, then continue without it If you are absolutely sure that your cake needs a full enclosure (which is quite strange...
Full answer by rumtscho: https://cooking.stackexchange.com/a/113169 (CC BY-SA 4.0).
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