Polymaker Fiberon PET-GF15 Filament – Glass Fibre Reinforced PET 1kg.
Polymaker Fiberon PET-GF15 is a premium engineering-grade 3D printing filament that combines PET with 15% glass fibre reinforcement to deliver exceptional strength, dimensional stability, and heat resistance. Engineered to bridge the gap between everyday printability and industrial-level performance, Fiberon PET-GF15 is ideal for makers and professionals who need durable, high-performance parts without sacrificing ease of use.
With a bending strength of 104 MPa and a heat deflection temperature of up to 133°C (after annealing), Fiberon PET-GF15 stands up to high-stress, high-temperature environments where standard PLA, PETG, or ABS would deform. Despite its industrial-grade toughness, it prints reliably on most modern FDM 3D printers at speeds up to 250 mm/s.
Key Benefits
Industrial-Grade Strength & Heat Resistance Reinforced with 15% glass fibre for outstanding stiffness, rigidity, and shape retention. Withstands continuous use in demanding environments, with HDT up to 133°C after annealing — perfect for automotive parts, enclosures, and functional components.
Excellent Dimensional Stability & Low Warping. Maintains tight tolerances and consistent accuracy, even on large prints. After annealing, dimensional change stays below 0.5%, ensuring precision-critical parts perform reliably under repeated mechanical stress.
Refined Surface Finish A proprietary fibre-control process minimises surface roughness (Ra ~7.9 µm) and reduces visible fibre exposure, producing a clean, professional matte finish that outperforms typical glass-fibre and carbon-fibre filaments.
High-Speed Printing Performance Engineered for stable, consistent extrusion at speeds up to 250 mm/s. Excellent layer adhesion ensures structural integrity on large, flat, or load-bearing parts.
AMS & Multi-Material System Compatible Bending fracture diameter under 20 mm makes Fiberon PET-GF15 compatible with most multi-material systems, including Bambu Lab AMS, AMS 2 Pro, AMS HT, AMS Lite, Anycubic ACE, ACE 2 Pro, and Creality CFS.
Low Moisture Absorption Resists moisture-related dimensional changes, helping prints stay precise and consistent even in humid environments.
Sustainable Packaging Shipped on a fully recyclable cardboard spool in recyclable packaging.
Technical Overview
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Material: PET reinforced with 15% Glass Fibre
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Diameter: 1.75 mm
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Net Weight: 1 kg spool
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Bending Strength: 104 MPa
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Heat Deflection Temperature (HDT): Up to 133°C @ 0.45 MPa (after annealing)
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Recommended Nozzle Temperature: 280–310°C
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Recommended Bed Temperature: 70–90°C
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Print Speed Capability: Up to 250 mm/s
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Surface Roughness: Ra ~7.9 µm
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Spool: Recyclable cardboard
Printer Requirements
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All-metal hotend capable of reaching 280–310°C
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Hardened steel or ruby nozzle required (glass fibre is abrasive and will rapidly wear standard brass nozzles)
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An enclosed or heated chamber is recommended for best results, especially on larger prints
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Open-frame printers can be used for parts with a smaller Z-height when paired with a hardened nozzle and proper bed temperature.
Printing Tips
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Drying: Dry at 100°C for 10 hours before printing for optimal results
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Annealing (optional): Anneal at 120°C for 16 hours if parts must withstand temperatures above 80°C
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Storage: Store sealed and dry, ideally below 20% relative humidity
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Bed adhesion warning: PET-GF adheres strongly to textured PEI plates — allow the plate to cool before removing parts, or use a release agent to prevent damage
Ideal Applications
Polymaker Fiberon PET-GF15 is engineered for demanding functional applications, including:
- Functional prototypes and engineering parts
- Jigs, fixtures, and tooling
- Automotive components and brackets
- Industrial enclosures and housings
- End-use mechanical parts requiring heat and chemical resistance
- Drone, RC, and robotics components
Whether you're a professional engineer producing tight-tolerance parts or an advanced hobbyist building durable, functional projects, Fiberon PET-GF15 delivers reliable, industrial-grade results in a user-friendly filament.
