Before handing over cash, perform a hands-on audit of these critical areas. If buying online, demand video proof for each:
Never buy a printer without seeing it complete a test print. buying a used 3d printer
: Power the unit on and preheat both the nozzle and the bed. Use the printer's display to verify they reach and maintain target temperatures without fluctuating wildly, which could indicate a failing thermistor or heater cartridge. Before handing over cash, perform a hands-on audit