I have been involved in 3d printing for over 10 years. My first printer was a PP3dP UP with ABS. Then a Multec M420 with two extruders, which I gradually modified more and more. Since the Bambulab, however, 3D printing has changed completely. Finally reliable printing with multiple materials. At the moment I use multiple bambulab printers, an H2D, X1C, A1 and also an A1 mini.