Also sold by Monoprice as the Mini Select, this is a very robust printer physically. The chassis is constructed of heavy gage steel. The motors are smooth and quite and durable. There are electrical problems but they usually caused by the motion of the printer, particularly the wiring to the bed heater. The motion on two axis, combined by the operating temperature of the bed, 60 degrees Celsius (140 Fahrenheit). The factory design doesn't hold up well, rerouting the wiring can save wear and tear.