Prusament Premium PETG Magnetite 40% Grey 1.75mm 1kg Filament | Iron-filled PETG filament with ±0.02 mm precision, magnetic properties, and metallic finish for functional prints.

Product Details

• [FUNCTIONAL PETG FILAMENT WITH MAGNETITE FOR SPECIALIZED PARTS] Prusament PETG Magnetite 40% Grey is ideal for functional prints that benefit from added weight, magnetic properties, or a unique matte metallic finish. Perfect for tools, switches, electromagnetic applications, or design projects with a professional look.
• [ULTRA-PRECISE DIAMETER ±0.02 MM] Each filament spool is manufactured with extremely tight diameter tolerances for consistent extrusion and smooth printing. This level of precision ensures dependable performance and higher print success compared to standard filaments.
• [LOW WARPING FOR LARGE, STABLE PRINTS] PETG Magnetite features very low shrinkage and warping, allowing you to print larger components without deformation. Ideal for structural parts, enclosures, and heavy-duty applications.
• [DURABLE, HEAVY & VISUALLY DISTINCT] Filled with magnetite powder, this filament adds weight and a premium dark-grey matte appearance to your prints. It delivers reliable strength while producing professional, industrial-quality results.
• [MANUFACTURED BY PRUSA RESEARCH] Prusament is produced in-house by the 3D printer manufacturer Prusa Research. Every spool is individually tested for diameter consistency, color quality, and mechanical performance. Each spool includes a QR code that allows you to check detailed manufacturing data online.

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Printing Prusament PETG

Prusament PETG in Grey runs on the PETG profile below, and this listing is a 1kg spool. PETG is best suited to functional parts that need toughness and the light outdoor or higher-heat use PLA can't handle. Brands and even individual spools vary, so treat these as starting points and run a quick temperature tower to lock in the sweet spot for your printer.

Ranges checked against Bambu Lab, Prusament and Polymaker data. Heat resistance is the heat deflection temperature (HDT). Read our PETG filament guide for bed adhesion, drying, troubleshooting, and material-specific tips.

Nozzle Compatibility

This listing includes metal-filled filament. Metal powder fills such as bronze, copper and steel are highly abrasive. Use hardened steel or a ruby nozzle, starting about 5 to 10°C hotter than with brass.

Based on Prusa and colorFabb guidance. More in our nozzle types guide.