Heated Build Chamber for Makerbot or similar

This is my take on a heated build chamber, a cardboard box!! Find one the right size or, as I did, make one out of several pieces of cardboard taped together. Drop it over your printer and you are done. The best value upgrade ever. The temperature inside speaks for itself, this was after an hour. Cut a viewing window for a delux version.
No more warped ABS prints and wallet friendly to.