{"product_id":"ferromagnetic-iron-pla-3d-printer-filament-metal-look-magnetic","title":"Ferromagnetic Iron PLA 3D Printer Filament - Metal Look \u0026 Magnetic","description":"\u003cp\u003eIn this review of the Protopasta ferromagnetic iron PLA filament, the bottom line is simple: this spool is for makers who want a convincing metal look and magnetic functionality without switching to actual metal printing. The 500g spool of 1.75mm filament contains about 45% iron powder by weight, which gives prints a heavier feel and allows magnets to adhere. It is best for hobbyists and modelers seeking a patina-capable, dense PLA composite that prints on common consumer machines while delivering a tactile, metallic finish.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e45% iron by weight:\u003c\/strong\u003e Provides twice the density of standard PLA so parts feel heavier and more metal-like.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFerromagnetic:\u003c\/strong\u003e Magnets will stick to finished prints, enabling functional magnetic attachments and effects.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePatina-friendly finish:\u003c\/strong\u003e The composite accepts patinas and surface treatments for realistic metallic appearance on models and props.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e500g spool, 1.75mm:\u003c\/strong\u003e A common spool size that is compatible with many consumer printers for routine printing runs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMade in USA:\u003c\/strong\u003e Manufactured domestically, reflecting Protopasta's focus on material experimentation and quality control.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConsumer printer compatibility:\u003c\/strong\u003e Works smoothly on many Prusa, Bambu, Creality, and Ender machines with appropriate nozzles.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThe filament is ideal for hobbyists, tabletop miniature painters, prop makers, and model builders who want a heavier-feeling print and the ability to patina parts for a realistic metal look. Its magnetic property is especially useful for makers building magnetic closures, display pieces, or interactive models.\u003c\/p\u003e\n\u003cp\u003eThose who should look elsewhere include users needing ductile, structural metal parts or industrial metal printing workflows; this remains a PLA composite and can be brittle in thin sections. Also consider hardened nozzles and larger nozzle diameters if you frequently print highly abrasive or detailed thin features.\u003c\/p\u003e\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eGives prints a dense, metallic feel thanks to the high iron content.\u003c\/li\u003e\n\u003cli\u003eMakes magnetic attachments possible because the filament is ferromagnetic.\u003c\/li\u003e\n\u003cli\u003eAccepts surface patinas and finishing techniques for convincing metal visuals.\u003c\/li\u003e\n\u003cli\u003eCompatible with many consumer printers and produced with domestic manufacturing oversight.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCan be more brittle than standard PLA, so thin features may break more easily.\u003c\/li\u003e\n\u003cli\u003eMay benefit from a hardened nozzle for long-term use because metal powder is abrasive to standard brass nozzles.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003ePLA base with iron powder (~45% by weight)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilament diameter\u003c\/td\u003e\n\u003ctd\u003e1.75mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpool weight\u003c\/td\u003e\n\u003ctd\u003e500g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDensity\u003c\/td\u003e\n\u003ctd\u003eApproximately twice the density of standard PLA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMagnetic property\u003c\/td\u003e\n\u003ctd\u003eFerromagnetic - magnets adhere to prints\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRecommended printers\u003c\/td\u003e\n\u003ctd\u003eConsumer printers like Prusa, Bambu, Creality, Ender\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eMade in USA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eFor makers who want convincing metallic prints with functional magnetism, this Protopasta iron PLA spool is a strong choice because it combines heavy feel, patina compatibility, and broad consumer printer support. It is good value for creative projects and display pieces, provided you accept some increased brittleness and consider using a hardened nozzle for extended use.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWill magnets stick to prints?\u003c\/strong\u003e\u003cbr\u003eYes, the filament is ferromagnetic and magnets will adhere to finished parts.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs this safe for standard nozzles?\u003c\/strong\u003e\u003cbr\u003eThe iron powder is abrasive; use a hardened steel nozzle for best longevity if you print a lot of this filament.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan the surface be made to look like real metal?\u003c\/strong\u003e\u003cbr\u003eYes, the composite accepts patinas and surface treatments to achieve realistic metallic finishes.\u003c\/p\u003e","brand":"Proto-Pasta","offers":[{"title":"Default Title","offer_id":48239708831963,"sku":"B00X8BQYPS","price":34.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/71GtHyznfCL._SL1500.jpg?v=1771090481","url":"https:\/\/gearmusthave.com\/products\/ferromagnetic-iron-pla-3d-printer-filament-metal-look-magnetic","provider":"GearMustHave","version":"1.0","type":"link"}