{"product_id":"3d-filament-fiberon-pet-gf15-15-stakleni-vlakna","title":"Fiberon PET-GF15 – engineering PET 3D printer filament - 15% glass fibers","description":"\u003ch2\u003eFiberon PET-GF15 – engineering PET 3D filament with 15% glass fibers\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eFiberon PET-GF15\u003c\/strong\u003e is a high-performance composite filament for FFF\/FDM 3D printers, based on PET (polyethylene terephthalate), reinforced with about \u003cstrong\u003e15% glass fibers\u003c\/strong\u003e. The material is designed to combine the convenience of \"everyday\" filaments with the mechanical properties of industrial engineering plastics – high stiffness, long-term stability, and excellent resistance to temperature and chemicals.\u003c\/p\u003e\n\u003cp\u003eThanks to the special formula of PET + glass fibers, Fiberon PET-GF15 achieves \u003cstrong\u003ebending strength of about 104 MPa\u003c\/strong\u003e, Young's modulus in XY over 4 GPa, and \u003cstrong\u003eHeat Deflection Temperature (HDT) up to 133.7 °C at 0.45 MPa after annealing\u003c\/strong\u003e. This allows for reliable operation of parts subjected to mechanical and thermal loads – for example, in automotive, industrial, and engineering applications.\u003c\/p\u003e\n\u003cp\u003eThe filament is available in a \u003cstrong\u003e1 kg spool, diameter 1.75 mm\u003c\/strong\u003e and is part of the Fiberon series from Polymaker, which is aimed at professional users and advanced enthusiasts. The packaging is made of recyclable cardboard – a practical solution for manufacturing environments where a lower environmental footprint is also sought.\u003c\/p\u003e\n\u003cp\u003eFiberon PET-GF15 is a logical choice if you are looking for a material for \u003cstrong\u003efunctional prototypes, assembly fixtures, enclosures, and end parts\u003c\/strong\u003e that need to withstand vibrations, higher temperatures, and long-term use. At the same time, it remains relatively easy to work with compared to many other engineering filaments.\u003c\/p\u003e\n\u003ch2\u003eTechnology and material quality\u003c\/h2\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0932\/3318\/5032\/files\/Fiberon_PET-GF15-images_600x600.jpg?v=1765349820\" alt=\"Fiberon PET-GF15 – engineering PET 3D printer filament - 15% glass fibers\" style=\"margin-top: 10px; margin-bottom: 10px; float: none;\"\u003e\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe core of Fiberon PET-GF15 is the well-known PET, supplemented with 15% short glass fibers. These fibers significantly increase \u003cstrong\u003ethe stiffness and dimensional stability\u003c\/strong\u003e of the parts while limiting shrinkage and deformation during cooling. As a result, the material behaves predictably and allows for tighter tolerances compared to standard PETG or PLA.\u003c\/p\u003e\n\u003cp\u003eAccording to the technical data sheet, the density of the material is about \u003cstrong\u003e1.43 g\/cm³\u003c\/strong\u003e at 23 °C. Mechanical tests on 3D printed samples show:\u003cbr\u003e– \u003cstrong\u003eYoung's modulus XY:\u003c\/strong\u003e ~4.14 GPa;\u003cbr\u003e– \u003cstrong\u003eTensile strength XY:\u003c\/strong\u003e ~59.9 MPa;\u003cbr\u003e– \u003cstrong\u003eTensile strength Z:\u003c\/strong\u003e ~48.2 MPa;\u003cbr\u003e– \u003cstrong\u003eBending strength XY:\u003c\/strong\u003e ~104.2 MPa;\u003cbr\u003e– \u003cstrong\u003eU-notch Charpy impact strength XY:\u003c\/strong\u003e ~8.7 kJ\/m².\u003c\/p\u003e\n\u003cp\u003eEspecially important with this material is good \u003cstrong\u003elayer adhesion\u003c\/strong\u003e. In the Z-direction, Fiberon PET-GF15 reaches about 80 MPa flexural strength, which is significantly better behavior compared to many classic fiber composites, where the Z-layer remains the weak point.\u003c\/p\u003e\n\u003cp\u003eIn terms of moisture absorption, PET-GF15 is far more stable than nylon filaments. The equilibrium water absorption at 70% relative humidity and 23 °C is about \u003cstrong\u003e0,32%\u003c\/strong\u003e, which means less dimensional changes and more predictable behavior during long runs.\u003c\/p\u003e\n\u003ch2\u003ePerformance and workflow\u003c\/h2\u003e\n\u003cp\u003eFiberon PET-GF15 is designed to operate at relatively high temperatures, but with good control over the process. The recommended settings are:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNozzle temperature:\u003c\/strong\u003e 280–310 °C;\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBed temperature:\u003c\/strong\u003e 70–80 °C;\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChamber temperature:\u003c\/strong\u003e ambient\/room;\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFan:\u003c\/strong\u003e off (0%);\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3D printing speed:\u003c\/strong\u003e from ~30 to \u003cstrong\u003e250 mm\/s\u003c\/strong\u003e depending on the printer and geometry.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThanks to the stable PET matrix and selected glass fiber fraction, the material allows for \u003cstrong\u003ehigh speeds\u003c\/strong\u003e, including on more modern CoreXY and AMS systems, without significant degradation of layer quality. For better layer adhesion and strength, it is advisable to work slower in critical areas (overhangs, thin ribs, precise holes).\u003c\/p\u003e\n\u003cp\u003eThe manufacturer recommends \u003cstrong\u003epre-drying at 100 °C for about 10 hours\u003c\/strong\u003e when the filament has been outside a dry box or when \"bubbling\" and micropores are observed in the layer. For maximum thermal resistance and stability after printing, \u003cstrong\u003eannealing at 120 °C for 16 hours\u003c\/strong\u003e can be applied, which raises the HDT to the specified 133.7 °C at 0.45 MPa.\u003c\/p\u003e\n\u003cp\u003eIt is recommended to use \u003cstrong\u003eadhesive for high-temperature materials\u003c\/strong\u003e or a textured PEI surface. PET-GF15 adheres very strongly to such beds; Polymaker explicitly advises that the part should be removed after complete cooling or with the help of a release agent to avoid surface damage.\u003c\/p\u003e\n\u003cp\u003eFor more detailed settings and profiles, you can use the ready-made configurations that \u003ca href=\"https:\/\/wiki.polymaker.com\/polymaker-products\/printer-profiles\/by-material\/pet-petg\/fiberon-tm-pet-gf15#bambu-lab\" rel=\"noopener\" target=\"_blank\"\u003ePolymaker provides through its profile library.\u003c\/a\u003e\u003c\/p\u003e\n\u003ch2\u003eCompatibility, ecosystem, and spool design\u003c\/h2\u003e\n\u003cp\u003eFiberon PET-GF15 is compatible with most \u003cstrong\u003eFFF\/FDM 3D printers with 1.75 mm filament\u003c\/strong\u003e, provided they have:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eall-metal hotend\u003c\/strong\u003e, reaching at least 280 °C;\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ehardened steel or ruby nozzle\u003c\/strong\u003e – glass fibers significantly wear out brass nozzles, and according to TDS, their lifespan can drop to about 9 hours of 3D printing;\u003c\/li\u003e\n\u003cli\u003ewell-managed bed heating and, if possible, a closed volume for larger details.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe material has been tested by Polymaker for use with \u003cstrong\u003eAMS and other multi-material systems\u003c\/strong\u003e, as the fiber length and its improved \"flexibility\" compared to many CF filaments allow for stable feeding even through longer PTFE paths.\u003c\/p\u003e\n\u003cp\u003eThe spool is made of \u003cstrong\u003ecardboard with precise holes for guiding and securing the filament\u003c\/strong\u003e, which facilitates use in dryers and filament cabinets. The net amount of material is 1 kg, and the additional QR code on the label leads to TDS and profiles for 3D printing – convenient for quick checking of settings directly from the workplace.\u003c\/p\u003e\n\u003cp\u003eFiberon PET-GF15 works excellently with popular slicers like PrusaSlicer, Bambu Studio, OrcaSlicer, and Cura – standard formats such as \u003cstrong\u003eSTL, 3MF, and OBJ\u003c\/strong\u003e are used. For maximum compatibility and repeatability, it is good practice to base your settings on the official profiles and then fine-tune them according to the specific printer.\u003c\/p\u003e\n\u003ch2\u003eProfessional use scenarios\u003c\/h2\u003e\n\u003cp\u003eThanks to the combination of hardness, heat resistance, and low moisture absorption, Fiberon PET-GF15 is suitable for a wide range of engineering applications:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomotive clips and housings in the engine compartment\u003c\/strong\u003e – after heating, the parts withstand temperatures above 120 °C and are resistant to oils and many technical fluids. Suitable for cable holders, connectors, mounting brackets, and covers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndustrial parts exposed to constant stress\u003c\/strong\u003e – gear covers, sensor holders, mounting blocks, and automation elements, where low deformation and stable dimensions are critical.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eJigs and fixtures\u003c\/strong\u003e – mounting, calibration, and inspection devices that must remain geometrically stable under load and with repeated use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnclosures and boxes for electronics\u003c\/strong\u003e – the PET base provides good chemical resistance and a higher working temperature compared to standard PLA, and the surface has a pleasant matte finish that hides the layers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunctional prototypes and small series of end products\u003c\/strong\u003e – consoles, handles, quick adapters, elements for drones and robots, where the balance between weight, strength, and easy reprinting in 3D is valued.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAfter annealing, the dimensional change is below 0.5 %, allowing for the design of parts with precise fits, e.g. hinge joints, sliding guides, and components that attract to metal elements.\u003c\/p\u003e\n\u003ch2\u003eLimitations and best practices\u003c\/h2\u003e\n\u003cp\u003eAlthough PET-GF15 is relatively easy to print composite filament, there are several important features:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNozzle wear:\u003c\/strong\u003e glass fibers are highly abrasive. The manufacturer recommends mandatory use of hardened or ruby nozzles; with a brass nozzle, the lifespan may be only a few hours of printing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature requirements:\u003c\/strong\u003e if your printer only reaches 280–285 °C, the material can be printed, but it is advisable to reduce the speed and monitor layer adhesion, especially for thick parts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMoisture:\u003c\/strong\u003e the material should be stored in a dry environment (below 20% RH) and preferably in a filament dryer. In case of \"cracking\" and white spots in the layer – dry the filament according to TDS.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnnealing:\u003c\/strong\u003e perform it on a flat surface, preferably together with the base and with supports preserved for parts with bridges and overhangs to avoid warping. Expect slight color lightening – this is not a defect, but a result of a change in the material's crystallinity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBed adhesion:\u003c\/strong\u003e PET-GF15 adheres strongly to a clean textured PEI surface. Allow the bed to cool completely or use a thin layer of adhesive\/release agent to protect the coating.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIt is recommended to create a calibration model to confirm dimensions before serial printing, especially if you plan subsequent annealing.\u003c\/p\u003e\n\u003ch2\u003eTechnical specifications and sources\u003c\/h2\u003e\n\u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003ePET with 15% glass fibers\u003c\/td\u003e\n\u003ctd\u003eFiberon series composite filaments\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilament Diameter\u003c\/td\u003e\n\u003ctd\u003e1.75 mm\u003c\/td\u003e\n\u003ctd\u003eTolerance according to manufacturer data\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet weight\u003c\/td\u003e\n\u003ctd\u003e1 kg\u003c\/td\u003e\n\u003ctd\u003eCardboard spool\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDensity\u003c\/td\u003e\n\u003ctd\u003e1.43 g\/cm³\u003c\/td\u003e\n\u003ctd\u003e23 °C, ISO 1183\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRecommended nozzle temperature\u003c\/td\u003e\n\u003ctd\u003e280–310 °C\u003c\/td\u003e\n\u003ctd\u003eAll-metal hotend\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBed Temperature\u003c\/td\u003e\n\u003ctd\u003e70–80 °C\u003c\/td\u003e\n\u003ctd\u003eTextured PEI or adhesive\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrint speed\u003c\/td\u003e\n\u003ctd\u003eup to 250 mm\/s\u003c\/td\u003e\n\u003ctd\u003eDepending on the printer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHDT @ 0.45 MPa (printed)\u003c\/td\u003e\n\u003ctd\u003e≈81.6 °C\u003c\/td\u003e\n\u003ctd\u003eISO 75\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHDT @ 0.45 MPa (after annealing)\u003c\/td\u003e\n\u003ctd\u003e≈133.7 °C\u003c\/td\u003e\n\u003ctd\u003e120 °C, 16 h\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTensile strength XY\u003c\/td\u003e\n\u003ctd\u003e≈59.9 MPa\u003c\/td\u003e\n\u003ctd\u003eISO 527, printed sample\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eYoung's modulus XY\u003c\/td\u003e\n\u003ctd\u003e≈4.14 GPa\u003c\/td\u003e\n\u003ctd\u003eISO 527\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBending strength XY\u003c\/td\u003e\n\u003ctd\u003e≈104.2 MPa\u003c\/td\u003e\n\u003ctd\u003eISO 178\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEquilibrium water absorption\u003c\/td\u003e\n\u003ctd\u003e≈0.32 %\u003c\/td\u003e\n\u003ctd\u003e70% RH, 23 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eLinks to tables and charts for download\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFiberon Material Comparison Guide – comparison tables and charts with other Fiberon filaments: https:\/\/fiberon.polymaker.com\/material-comparison\/\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Polymaker","offers":[{"title":"Black","offer_id":52946290082056,"sku":null,"price":29.5,"currency_code":"EUR","in_stock":true},{"title":"White","offer_id":52946290114824,"sku":null,"price":29.5,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0932\/3318\/5032\/files\/polymaker-fiberon-pet-gf15-black-175-mm-1000-g-1179775-bg.webp?v=1765349938","url":"https:\/\/3dlarge.com\/en\/products\/fiberon-pet-gf15-engineering-pet-3d-printer-filament-15-glass-fibers","provider":"3DLarge","version":"1.0","type":"link"}