Buying A Used 3d: Printer

: Inspect the aluminum extrusions for dents or bends. A dropped frame can lead to permanent misalignment that software leveling cannot fully fix. The Ultimate Litmus Test: The Stress Print

: Use Digital Calipers to check if a 20mm test cube is actually 20mm. Major deviations suggest worn-out belts or incorrectly calibrated E-steps. 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. : Inspect the aluminum extrusions for dents or bends

Never buy a printer without seeing it complete a test print. buying a used 3d printer