The original Mendel90 printer has about 8kg of weight. It is large and bulky to transport. It is not friendly to move around. If you move it anyway you could damage the calibration and have to recalibrate it before you start printing at the new place. Sometimes it is not even necessary to print anything while explaining a part of the printer – but when you moved it, calibration could be lost. Therefore I asked myself if it's possible to have a smaller model of a Mendel90 to show it to friends and have it with me when I need a model to explain 3D printing to novices.A making of video is here: http://youtu.be/NHBJwqG95sQ?list=UU8E6AiF8DO7CCffDUYqDFtA