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Protopasta Ferromagnetic Iron PLA is a 1.75mm PLA filament loaded with about 45% iron powder by weight, giving prints roughly twice the density of standard PLA and a real metal feel. Magnets stick to it, and the surface can be forced into a patina for an aged, metallic look. It suits tabletop miniatures, props, tools and car models where weight and finish matter more than ease of printing. Against plain PLA and lighter metal-look filaments, it trades printability for genuine heft and magnetic response.
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Lowest price we've seen: $34.99 on Nov 13 at Amazon. Tracked across 1 store since Nov 13.
Owners of Protopasta's iron-filled PLA describe genuine metal weight and magnetic grip, and many like the patina finish. Most complaints center on abrasive wear and brittle, heavier parts.
Protopasta Ferromagnetic Iron PLA is a metal-filled 3D printer filament. It is a PLA base mixed with 45% iron powder by weight. The 500 g spool holds 1.75 mm filament. It has twice the density of standard PLA, which gives prints a metal look and feel.
The filament is ferromagnetic, so magnets stick to it. It can also be given a patina for a metallic finish. That suits models such as cars, tools, tabletop game miniatures and other metallic accessories.
It works with most consumer printers, such as Prusa, Bambu, Creality and Ender. The filament and spool are made in the USA.
