Hi,I am a product designer and have upgraded my 3D printer range, with too little space in my studio for four printers I am selling my Ultimaker Original. With a record of 1,500-2,000 print hours it is still in good operating condition and has a working dual extruder. About a year ago there was a problem with one of the motors skipping but it was easily repaired by adjusting the supply voltage on the motor driver's potmeter.   Supplied with the 3D printer are the power and U