Fiberon™ PA6-GF25 (Formerly PolyMide™ PA6-GF) for Polymaker

NOTE: New/Old package ship in random

(Formerly PolyMide™ PA6-GF)Fiberon™ PA6-GF25: High-Performance Glass Fiber Reinforced Nylon 6 Filament

Exceptional Strength, Stiffness, and Heat Resistance

Fiberon™ PA6-GF25 is a glass fiber reinforced PA6 (Nylon 6) filament containing 25% glass fiber by weight. This advanced composite material delivers outstanding mechanical strength, high stiffness, and excellent thermal properties, making it ideal for demanding engineering, automotive, aerospace, and industrial applications.

Key Features

25% Glass Fiber Reinforcement: Significantly enhances rigidity, strength, and dimensional stability.

Excellent Thermal Properties: Withstands high temperatures, featuring a heat deflection temperature (HDT) of up to 191°C after annealing.

Superior Layer Adhesion: Maintains strong interlayer bonding for durable, cohesive prints.

Minimal Warping: Warp-Free™ technology allows printing at lower bed temperatures (40–50°C), reducing the risk of warpage and improving dimensional accuracy.

High-Speed Printing: Compatible with print speeds up to 300 mm/s.

Easy-to-Use for Advanced Users

Fiberon™ PA6-GF25 does not require a heated chamber and can be printed reliably on high-performance FDM/FFF 3D printers equipped with a hardened steel nozzle due to the abrasive nature of glass fibers. For best results, filament drying before printing and post-print annealing (100°C for 10–16 hours) are strongly recommended to maximize mechanical and thermal performance.

Same Trusted Formula, New Name

Fiberon™ PA6-GF25 is the same high-performance material as PolyMide™ PA6-GF, now under the Fiberon™ brand.

Choose Fiberon™ PA6-GF25 for applications requiring maximum strength, stiffness, and heat resistance without compromising printability or layer adhesion.

Formerly called PolyMide PA6-GF.

Printing Requirements

All-metal hotend 280˚C+

Hardened nozzle

Filament dryer

Annealing post printing

Moisture conditioning after Annealing

Printing Temperature: 280˚C - 300˚C

Build Plate Temperature: 40˚C - 50˚C

Chamber Temperature: Room Temperature

Printing Speed: up to 300mm/s

Cooling Fan: OFF

Direct Drive:

Retraction Distance: 3mm

Retraction Speed: 40mm/s

Indirect Drive:

Retraction Distance: 6mm

Retraction Speed: 60mm/s

Recommended Drying Settings:

Regular Oven: 100˚C for 10h

PolyDryer: Level 3 for 18h (PolyDryer™)

(Only if the material has absorbed moisture)

Annealing Settings: 100˚C for 16h

What is moisture conditioning?

Moisture conditioning refers to allowing the print to absorb moisture. This is inevitble since nylons are hygroscopic, but you can expedite the process by keeping the print in a high humidity climate, or submerging them in water, for 48 hours. All of our test specimens were annealed at 100˚C for 16 hours, and then immerged in water at 60˚C for 48 hours. The average moisture content of specimens is 2.57%.

Should I anneal before or after moisture conditioning?

When you anneal in a convection oven, you will dry the part out. So if you moisture condition before annealing - you will need to moisture condition again after. So we would suggest to moisture condition after annealing.

Why do you use such a low build plate temperature with your nylons?

Our nylons come with our Warp-Free™ Technology. In order for this Warp-Free™ technology to work as it should - we want to make sure the build plate and the ambient air temperatures are both below 50˚C. We then anneal the print after to get it's full strength.

Will the spools work in an AMS?

Yes! We have redesigned the edges of our spools so all Polymaker products will now spin great in the AMS.

That said - you will need to be careful when using any abrasive materials in the AMS.

Can you offer 1KG Fiberon™ Spool Options?

Unfortunately we are not offering 1KG Fiberon™ options and this has to do with the increased chance of carbon fiber and glass fiber filament snapping on the spool.

Since carbon fiber and glass fiber filament is more brittle, we spool these with a larger core. This larger core means that 1KG of filament will not fit on a 1KG spool.

Fiberon by Polymaker: A new product line dedicated to democratizing high-performance composite materials. This cost-effective 3D printing filament is optimized for high-speed printing and offers excellent printability and compatibility with most mainstream and entry-level printers, enabling the production of high-performance parts.

Stiff, Strong, and Heat Resistant Nylon Filament: Polymaker 1.75mm Fiberon PA6-GF nylon filament is a glass fiber-reinforced Nylon 6 that offers excellent thermal and mechanical properties without compromising layer adhesion.

Wide Application: Fiberon PA6-GF nylon filament is strong, durable, and heat resistant. It is ideal for applications requiring torsional, tensile, and impact strength, such as bicycle pedals, brackets, jigs, drone frames, prosthetics, and handles.

Tangle-Free & Resealable Bag: Fiberon PA6-GF nylon filament in 1.75 is carefully wound to prevent tangling and is vacuum-sealed in a resealable ziplock bag with a desiccant. After use, pass the filament through the fixed hole to avoid tangles.

Cardboard Spool with Enhanced Hard Edge: Fiberon filament is packaged in upgraded materials, featuring a reinforced edge coating and a fully recycled cardboard spool and box. The hard edge prevents dust degradation and protects against deformation and delamination.