Cold Boxes - Insulated Containers

These containers are able to maintain a cooler temperature inside for longer than a common thermal bag. Due to the thickness of the walls and possibly the Knudsen effect created by the infill pattern, the interior remains colder. I designed three types of containers, and I used the smallest one to test the temperatures with a refrigerator thermometer. 3D printed cold box Fridge: 3 Perimeters, 15% gyroid infill. Room temp is 23.2° 10.1 C° 7.21am → 21.5 C° 8.21am*Fridge: 3 Perimeters, 15% gyroid infill. Tin foil added to lid. Room temp is 23.5° 9.8 C° 9.11am → 21.8 C° 10.11amFreezer: 3 Perimeters, 15% gyroid infill. Room temp is 23.6° -11.6 C° 11.02am → 18.2 C° 12.02pmCommon cold box (thermal bag)Fridge: Room temp is 23.6° 10.3 C° 8.56am → 23.6 C° 9.56amFreezer: Room temp is 24° -11.0 C° 12.14pm → 23.8 C° 1.14pm *the tinfoil added to the lid experiment didn't add any advantage so is omitted it in the graph. I printed these containers in PLA, with a TPU gasket. I also designed tiles t