I had warping / curling issues with my printer, but only on the right hand side of the part. I realised that the design of the heatsink on the MK8 was causing a stream of air to pass over the right side of the printed part, cooling it down more quickly than the left causing the part to warp. This baffle fits over the heatsink and directs the exhaust air from the fan upwards instead of horizontally outwards - problem solved!