Fiberon™ PA6-GF25 (formerly Polymaker PolyMide™ PA6-GF) is a high-performance technical filament based on polyamide 6 reinforced with 25% glass fibers. It combines outstanding mechanical strength, stiffness, and heat resistance with good printing processability, making it an ideal choice for functional parts and replacement machine components.

Key features

The addition of 25% glass fibers significantly increases stiffness, flexural strength, and dimensional stability compared to pure nylon. The material retains excellent wear and fatigue resistance, withstands long-term mechanical loads, and exhibits minimal creep. Thanks to the fiber reinforcement, heat resistance is significantly higher than that of standard PA6 - parts retain their mechanical properties even at elevated operating temperatures. The filament has reduced warping tendency compared to unfilled PA6 and offers a matte surface with a technical appearance.

PA6-GF25 is a hygroscopic material - it must be thoroughly dried before printing to ensure optimal print quality and mechanical properties of the finished part.

Printing parameters

Who is Fiberon™ PA6-GF25 (formerly Polymaker PolyMide™ PA6-GF), 1.75mm, 500g suitable for

This filament is intended for advanced users and professional applications where high strength, stiffness, and heat resistance are required. It is suitable for the production of functional prototypes, spare parts, structural components, tool holders, gears, brackets, automotive parts, industrial clamps, jigs, and fixtures. It excels wherever regular PLA or PETG would fail to withstand mechanical stress or elevated temperatures.

Printing tips

• Always use a hardened nozzle (e.g., made of hardened steel or with a carbide coating) - glass fibers quickly wear down standard brass nozzles.
• Dry the filament carefully before each print - moisture causes bubbling, cracking, and degradation of mechanical properties.
• During printing, ideally use a filament dryer (e.g., PolyDryer) to keep the material dry.
• Printing works better in an enclosed chamber - it reduces the risk of delamination and improves layer adhesion.
• For good bed adhesion, use an adhesive designed for nylons (e.g., Magigoo PA) or a PEI bed.
• Keep part cooling to a minimum - PA6 is sensitive to rapid cooling, which causes warping and poor interlayer adhesion.
• Use a direct drive extruder - the material is relatively stiff and Bowden setups may experience feeding issues.
• We recommend using a heat break with excellent thermal insulation and a hotend capable of stably maintaining temperatures above 280 °C.