Elegoo Neptune 4 — Metal Fill PLA

Metal fill PLA (iron, brass, copper powder) is heavy and very abrasive. Mandatory hardened nozzle. Post-processing with fine sandpaper and polishing compound reveals authentic metal sheen. Temperatures Speed Cooling Retraction Quality Notes Tips Hardened nozzle is non-negotiable — metal powder destroys brass nozzles in minutes. Go slow. Print tall: the metal weight strains overhangs. Polish printed parts with steel wool → Brasso for authentic metal finish.