Prusa MK3S Print Issues Due to Dirty or Worn Components

Check for a partial nozzle clog by performing a cold pull and inspecting the nozzle tip for physical buildup or debris. Verify the condition of the Bondtech extruder gears by opening the idler door to inspect for filament dust, debris, or misalignment with the filament path. Inspect the steel print sheet for oils, fingerprints, or residue that would prevent proper adhesion.

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