Give a good shine to your prints with Steel Fill filament. This filament is composed of 50% steel bonded together by polymer binders allowing printing like any other filament. This filament is capable of being polished like metal, giving it a true shine and luster. Breathe new life into those statuettes or busts of your favorite character. Because this filament contains metal which is abrasive, you may need to replace brass nozzles over time. We also recommend a .5mm nozzle or larger to prevent clogs from the metal powder.