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Elegoo Neptune 4 — Metal Fill PLA

⚙ Elegoo Neptune 4 Tested 2025
4/5
Notes
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.
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.
Details

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

SettingValue
Nozzle235 °C
Bed60 °C
First Layer Bed65 °C

Speed

SettingValue
Print Speed80 mm/s
First Layer Speed40 mm/s

Cooling

SettingValue
Fan Speed20 %

Retraction

SettingValue
Distance0.8 mm

Quality

SettingValue
Layer Height0.2 mm
Flow Rate100 %

Notes

SettingValue
Nozzle TypeHardened steel REQUIRED — ruins brass instantly critical
Post ProcessSand 400→800→1200 grit, polish with Brasso for metal finish

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.