I'm not sure if anyone else here really plays Portal 2, let alone the PeTI (Perpetual Testing Initiative). I find that making test chambers is enjoyable, but much easier said then done. This is really just a thread for sharing the chambers. Might I suggest downloading the EGGMOD BEEMOD, which adds crushers, Pneumatic Diversity Vents, Doors, Triggers, Logic Gates, Auto-Portals, Drawbridges, Warm Lights, and High Energy Pellets. I am upset to say however, that my first chamber was a tad too difficult.Oh, this chamber is great: http://steamcommunity.com/sharedfiles/filedetails/?id=110821053&searchtext=More to follow.