Steel-filled Metal Composite PLA

Now available in 1kg size.

Protopasta Stainless Steel PLA filament is a dense material that prints as easily as standard PLA, but results in heavy cast-metal looking prints that can be brushed, sanded, or polished post-print to achieve amazing results. Using real steel powder, this premium, metal-filled steel PLA filament is perfect for jewelry, costumes, props, figurines, crafting, robots, or any other 3D prints needing a truly stainless steel finish.

*Steel PLA made on and after Feb 27, 2025 (lot number X50227 B XXX) is made from 400-series stainless, instead of 300-series, just like our new steel colors, gold , burgundy , and blue . Also, A identifies 300-series and B 400. 400-series is magnetic (not a permanent magnet, but magnets will stick to it) and does not contain Nickel (so the Prop65 warning is removed). Metal color may vary by lot. Print and polishing performance are comparable.

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