Build your own super cool box! NEW ORIGINAL DESIGN - part 2

Ever longed for a Super insulated Cooler / Esky / Cool Box but could not afford the high price tag? This experimental project combines 4" (100mm) thick foam walls with a thermoelectric Peltier cooler device to make what should be a highly efficient cooler for about £60 UK pounds or $100 US dollars. Simple step-by-step instructions. Part 4 to follow soon!