3D Printing Info

Filament comparison

PA6-GF vs PLA Glow

Compare printing settings, strength, heat resistance, dated prices and sources.

Glass-fibre PA6 (PA6-GF) guideGlow-in-the-dark PLA guide

2 selected · all documented properties

Open these two in the interactive comparisonMore PA6-GF comparisonsMore PLA Glow comparisons
PA6-GF vs PLA Glow — documented properties and sources
PropertyGlass-fibre PA6 (PA6-GF)PAGlow-in-the-dark PLAPLA
Market snapshot
Listing priceUSD/kg; dated snapshots$59.98/kg median; $39.99–$130.00/kg across 6 dated product listings$24.99/kg median; $19.99–$49.16/kg across 5 dated product listings
Identity & Market
Base polymer / chemistryPA6 reinforced with chopped glass fibre — Polymaker's grade is 25 wt%[1][2]PLA with a phosphorescent additive at 2–20 wt% (Bambu Lab SDS, filler not named)[3]
Densityg/cm³1.14 (Bambu Lab) and 1.20 (Polymaker Fiberon), ISO 1183[2][1]1.24 (colorFabb) to 1.26 (Bambu Lab), ISO 1183[4][5]
Typical priceUSD/kg1 kg-equivalent spools span 40–130; the middle of the market is about 60[2][6][7]1 kg spools cluster near 25[8][9]
Price range across brandsUSD/kg40–130 across brands; SUNLU 40, YXPOLYER 45, Polymaker Fiberon and Bambu Lab 60, 3DXTech FibreX 87, Obsidian Nylon 6+GF 130[6][2][10][7][11]20–49 across brands; ELEGOO 20, Bambu Lab 25, Polymaker 25, Filament PM 49 on 0.5 kg spools[12][8][9][13]
Market availability1–5Stocked by most mainstream brands[2][6][10][7][11]Stocked by most mainstream brands[8][9][12]
Spool sizes & diameters1.75 and 2.85 mm; 0.5, 0.75 and 1 kg spools[6][10][2]1.75 and 2.85 mm; 0.75 and 1 kg spools[6][5]
Typical applicationsStiff, heat-resistant structural parts where a matte finish and lower cost beat carbon fibre[2][1]Signage, novelty and cosplay parts that glow after light exposure[4]
Printing Parameters
Nozzle temperature°C260–290 (Bambu Lab)[2]190–230 on the Bambu Lab TDS against 210–240 in its own material table; colorFabb advises 195–220[4][14][5]
Bed temperature°CNot documented35–45 (Bambu Lab); 50–60 (colorFabb)[4][5]
Enclosure / chamber requirement1–5Enclosure required (passive) — Bambu Lab specifies a 45–60 °C chamber[2]Open frame is fine[4]
Recommended chamber temperature°C45–60 (Bambu Lab)[2]Not documented
Part cooling fanNot documentedFan on; colorFabb allows 0–100 %[4][5]
Bed surface & adhesion aidPEI sheet with a glue stick, or a dedicated adhesive such as Magigoo[15][16]Not documented
Maximum volumetric flow (mm³/s; see test conditions)mm³/s10 at Bambu Lab's 130 mm/s cap on a 0.4 mm nozzle at 0.2 mm layer[2][17]Not documented
Bed-adhesion difficulty1–5Needs a specific surface plus adhesive[15]Not documented
Stringing / oozing tendency1–5Moderate — retraction tuning needed[16]Not documented
Overall printing difficulty1–5Expert / industrial hardware only[2][18]Easy — minor profile tuning; a hardened nozzle is mandatory[14][9]
Extruder requirement0.6 mm nozzle recommended by Bambu Lab; 0.4 and 0.8 also supported[2]Bambu Lab: hardened steel and high-flow nozzles only, 0.2 mm excluded, AMS lite not compatible[14]
Hardware Wear & Reliability
Nozzle hardness required1–4Hardened steel required — Polymaker measures brass nozzle life at about 9 h on PA6-GF25 and recommends hardened steel or ruby[1]Hardened steel required[14][9][5]
Abrasiveness1–5Highly abrasive — standard GF composite; Polymaker puts brass nozzle life at roughly 9 h on PA6-GF25[1]Highly abrasive — the phosphor is a hard ceramic; Bambu Lab groups glow with carbon fibre as the materials that wear nozzles and grind AMS PTFE, and both Bambu Lab and Polymaker require a hardened nozzle[14][5]
Nozzle clog risk1–5Very high — frequent jams without careful setup[18]Moderate — needs dry filament and a clean nozzle[14]
Heat-creep / jam sensitivity1–5Moderate — good heatbreak cooling needed[15]Not documented
Hotend requirementMay require an all-metal hot end (Simplify3D)[15]Hardened steel nozzle; Bambu Lab lists glow-in-the-dark among the filaments its hardened-steel nozzle exists for[19][14]
Other hardware wearNot documentedBambu Lab reports the filament adds enough feeding resistance to fail prints on the AMS lite; colorFabb warns of brass nozzle wear[14][5]
Moisture Behaviour
Moisture absorption (hygroscopicity)1–5Very high (>2 %) — 2.56 % saturated at 25 °C / 55 % RH (Bambu Lab) and 3.33 % equilibrium (Polymaker Fiberon), the highest in the dataset[2][1]Moderate — 0.46 % saturated at 25 °C / 55 % RH[4]
Equilibrium moisture content at ~50 % RH%2.56 saturated at 25 °C / 55 % RH (Bambu Lab); 3.33 equilibrium (Polymaker Fiberon PA6-GF25)[2][1]0.46 saturated at 25 °C / 55 % RH (Bambu Lab)[4]
Drying temperature & time80 °C for 8–12 h (Bambu Lab)[2]Not documented
Symptoms when wetPopping and cracking during extrusion, then hard-to-diagnose defects[20]Not documented
Effect of moisture on strengthPolymaker publishes dry and wet printed blocks for PA6-GF25 itself: at 4.57 % moisture tensile falls 80.1 → 40.2 MPa and modulus 5357 → 1794 MPa, while notched Charpy rises 10.0 → 28.0 kJ/m²[1][20]Polymaker rates PLA low-sensitivity and publishes no dry-versus-conditioned figures for this grade; absorbed water flashes to steam and shows as bubbling and poor layer adhesion[18]
Storage requirementSealed below 20 % RH with desiccant[18]Not documented
Hydrolysis at melt temperaturePolymaker specifies an 80–100 °C dry and storage below 20 % RH; no molecular-weight loss figure is published, and the wet data it does publish is conditioning rather than melt hydrolysis[21][22]Not documented
Mechanical Properties
Tensile strength (XY)MPa75 ± 6 (Bambu Lab) and 80.1 ± 1.8 (Polymaker Fiberon, dry/annealed) printed XY, ISO 527; Fiberon falls to 40.2 ± 2.1 conditioned to 4.57 % moisture. Stratasys FDM PA6/66-GF30-FR gives 60.2-61.1 at break and 61.7-62.3 at yield printed XZ (ASTM D638)[2][1][23]32 ± 3 printed XY, ISO 527 (Bambu Lab); colorFabb quotes 61.5 by ISO 527 on its own specimens[4][5]
Young's modulusMPa2850 ± 260 (Bambu Lab) and 5357 ± 211 (Polymaker Fiberon, dry) printed XY, ISO 527; Fiberon falls to 1794 ± 84 conditioned. Stratasys FDM PA6/66-GF30-FR gives 5600-5830 printed XZ against 3050-3140 in ZX (ASTM D638)[2][1][23]2030 ± 210 printed XY, ISO 527 (Bambu Lab); colorFabb 2960[4][5]
Elongation at break%2.4 ± 0.2 dry (Polymaker Fiberon) to 3.9 ± 0.8 (Bambu Lab) printed XY, ISO 527; the Fiberon grade rises to 4.2 ± 0.7 conditioned[2][1]8.6 ± 1.2 printed XY, ISO 527 (Bambu Lab); colorFabb 10.5 at break[4][5]
Flexural strengthMPaNot documented76 ± 4 printed XY, ISO 178 (Bambu Lab)[4]
Flexural modulusMPa3670 ± 140 printed XY, ISO 178 (Bambu Lab)[2]2640 ± 130 printed XY, ISO 178 (Bambu Lab); colorFabb 3295[4][5]
Charpy impact, notchedkJ/m²10.0 ± 0.7 printed XY dry and 28.0 ± 1.0 conditioned, ISO 179 notched (Polymaker Fiberon); Bambu Lab 7.2 ± 2.3[1][2]2.8 (colorFabb, ISO 179-1/1eA) and 8.8 ± 1.7 (Bambu Lab, ISO 179) printed XY, notched[4][5]
Other impact dataCharpy unnotched 27.2 ± 2.2 printed XY (Bambu Lab, ISO 179). Stratasys FDM PA6/66-GF30-FR gives Izod notched 74.6-77.1 J/m printed XZ against 17.2-22.1 in ZX (ASTM D256)[2][23]Charpy unnotched 27.3 (Bambu Lab) and 30.8 (colorFabb), printed, ISO 179[4][5]
Layer adhesion / Z tensileMPa27 ± 5 (Bambu Lab) and 60.7 ± 1.1 (Polymaker Fiberon, dry) printed Z, ISO 527 — the two makers differ by more than a factor of two; Fiberon falls to 26.3 ± 1.5 conditioned. Stratasys FDM PA6/66-GF30-FR gives 23.7-24.4 at break printed ZX (ASTM D638)[2][1][23]26 ± 3 printed Z, ISO 527 (Bambu Lab)[4]
Brittleness1–5Brittle — snaps with little warning; elongation at break 2.4 % in XY[1]Brittle — snaps with little warning[4]
Hardness (scale-specific)Shore A / Shore D / RockwellRockwell M88 / R117 on extruded PA66-GF30 stock (ASTM D785)[24]Not documented
Creep resistance / sustained load1–5Good. Ensinger lists high creep resistance as a headline property of extruded PA66-GF30 stock; the rating is held below Excellent because equilibrium moisture uptake of 3.33 % softens the matrix in service[24][1]Poor — no glow-grade creep test; plain printed PLA sagged from 12 to 16.2–21.8 mm over 5 days at 1.25 kg[25][26][27]
Fatigue / repeated-flex resistance1–5Good. Ensinger lists high fatigue strength as a headline property of extruded PA66-GF30 stock[24]Poor — no grade-specific S-N curve; plain printed PLA ran 38 000–49 000 cycles at 30 % of tensile strength and the glow filler leaves a brittle, highly abrasive compound[28][4]
Elasticity / flexibility1–5Rigid[2]Rigid[4]
Z strength as % of XY%36 (Bambu Lab) to 76 (Polymaker Fiberon), printed; Stratasys FDM PA6/66-GF30-FR gives 39-41 (ZX against XZ tensile at break, ASTM D638)[2][1][23]81 by tensile, 72 by flexural (printed, Bambu Lab)[4]
Thermal Properties
HDT at 0.45 MPa°C182 (Bambu Lab) and 191 (Polymaker Fiberon), ISO 75 at 0.45 MPa. Stratasys FDM PA6/66-GF30-FR gives 161 printed XY and 185 XZ (ASTM D648 at 66 psi)[2][1][23]55 (ISO 75, 0.45 MPa)[4]
HDT at 1.8 MPa°C157 (Polymaker Fiberon) and 158 (Bambu Lab), ISO 75 at 1.8 MPa[2][1]52 (ISO 75, 1.8 MPa)[4]
Glass transition (Tg)°C67 (Bambu Lab) and 70.4 (Polymaker Fiberon), DSC; Stratasys measures 51.5 on FDM PA6/66-GF30-FR (ASTM D7426)[2][1][23]55 (DSC)[4]
Melting point / Vicat°C214.5 (Polymaker Fiberon) and 219 (Bambu Lab) melting, DSC; Vicat 210–212 (ISO 306)[2][1]155 peak melt (DSC); colorFabb quotes above 155 by ISO 3146-C[4][5]
Thermal expansion (CTE)µm/m·K48.6 on extruded PA66-GF30 stock (ASTM D696; source states 2.7e-5 in/in/°F). Stratasys measures much higher on printed FDM PA6/66-GF30-FR — 95.4 over -20 to 5 °C and 214 over 25 to 80 °C in XY (ASTM E831)[24][23]Not documented
Flammability / UL 94Flammable; no UL 94 rating published for the grades surveyed[21]Not documented
Environment & Chemical
UV resistance1–5Months outdoors before embrittlement — unstabilised polyamide yellows under UV[16]Degrades within weeks outdoors[29]
Chemical resistanceWithstands oils, fuels and alkalis[16]Not documented
Water / humidity resistance in service1–5Absorbs water, properties shift[20]Not documented
Food contactNot food-contact certified as filament[16]Not documented
Biodegradability / compostabilityNot biodegradable[16]Not documented
RecyclabilityNot accepted in household plastic collection[16]Not documented
Electrical & ESD propertiesSurface resistivity above 10¹² ohm — insulating (Polymaker Fiberon, ANSI/ESD S11.11)[1]Not documented
Health & Safety
Fume toxicity1–5Moderate — measurable VOCs and UFPs, ventilation advised[30]Low hazard — minimal VOC and particle emission[30]
VOC emission rateµg/minUp to 180 caprolactam, the dominant VOC from nylon and the largest single-VOC rate in the study[30]Not documented
Ultrafine-particle emission rateparticles/min≈2 × 10⁸ median for nylon — low for particles despite the highest VOC mass measured[30]Not documented
Hazardous species emittedCaprolactam, at up to 180 µg/min from nylon filament[30]Not documented
Ventilation / filtration requirement1–5Ventilated room or enclosure recommended[30]None needed in a normal room[30]
Dust & fibre handling hazardGlass fibre is bound in the matrix; avoid inhaling sanding dust[1]Not documented
Post-Processing
Sanding & machiningSands poorly — gums rather than powders[15]Not documented
Gluing & solvent weldingCyanoacrylate; no common solvent welds polyamide[15]Not documented
Vapour / chemical smoothingNo practical vapour smoothing[15]Not documented
Support material pairingNot documentedSupport for PLA (Bambu Lab)[4]
Dimensional accuracy & detailNot documentedGlow brightness rises with wall thickness; 0.2 mm nozzles are not usable[14]
Solvents & Solubility
Soluble inFormic acid, phenol, m-cresol and hexafluoroisopropanol dissolve the matrix at 23 °C, leaving the fibre; laboratory reagents.[31]Chloroform dissolves the PLA matrix (10 % w/v, 2–4 h at 23 °C) and leaves the filler as loose sludge; laboratory reagent.[32]
Softened or crazed byZinc chloride solutions stress-crack the nylon matrix, alcoholic calcium chloride dissolves it, mineral acids attack it.[31]Acetone, ethyl acetate and toluene plasticise the matrix but dissolve <1 % even at 65 °C; acetone submersion crazes parts.[32][33]
Solvent welding & smoothing agentNone — nylon's only solvents (formic acid, phenol, HFIP) degrade the part, and the fibre blocks surface flow anyway.[31]Chloroform vapour attacks only the resin fraction, so the filler is left standing proud; no workshop-safe agent exists.[34][33]

Material entries describe families or representative grades, not an interchangeable specification for every spool. Test methods, orientations and conditions may differ. Unknown values are marked “Not documented”. Prices and source dates remain historical snapshots; check the linked guide for product details. Differences highlight text, not a universal winner.

Sources for this comparison

  1. Fiberon PA6-GF25 Technical Data Sheet V1.1 Polymaker · 2024-12 · tds
  2. Bambu Filament Technical Data Sheet — PA6-GF Bambu Lab · 2026-08 · tds
  3. Safety Data Sheet SDS20251127A12 — Bambu PLA Glow Bambu Lab · 2025-11 · msds
  4. Bambu Filament Technical Data Sheet — PLA Glow Bambu Lab · 2026-08 · tds
  5. glowFill technical data sheet colorFabb · 2026-08 · tds
  6. Polymaker product catalogue Polymaker · 2026-08 · vendor
  7. SUNLU Nylon-6 Glass Fiber (PA6-GF) 3D Printer Filament 1 kg — product page SUNLU · 2026-08 · vendor
  8. PLA Glow — product page Bambu Lab US Store · 2026-08 · vendor
  9. Panchroma Luminous PLA — product page Polymaker Shop · 2026-08 · vendor
  10. 3DXTech product catalogue 3DXTech · 2026-08 · vendor
  11. YXPOLYER PA6-GF Black 1 kg — product page YXPOLYER · 2026-08 · vendor
  12. ELEGOO product catalogue ELEGOO · 2026-08 · vendor
  13. Filament PM PLA GlowJet technical data sheet Filament PM (Plasty Mladec) · 2026-08 · tds
  14. PLA Usage Guide Bambu Lab Wiki · 2026-08 · doc
  15. Nylon — Ultimate 3D Printing Materials Guide Simplify3D · 2026-08 · doc
  16. PA (Nylon) — material basics Polymaker Wiki · 2026-08 · doc
  17. Max volumetric speed Prusa Knowledge Base · 2026-08 · doc
  18. Wet Filament — signs, causes and drying Polymaker Wiki · 2026-08 · doc
  19. Nozzles — material and compatibility Bambu Lab Wiki · 2026-08 · doc
  20. Moisture Conditioning — effect on printed nylon properties Polymaker Wiki · 2026-08 · doc
  21. Fiberon PA6-CF20 Technical Data Sheet V1.1 Polymaker · 2024-12 · tds
  22. PolyMide CoPA Technical Data Sheet V5.4 (dry and wet status blocks) Polymaker · 2024-11 · tds
  23. FDM PA6/66-GF30-FR — Material Data Sheet Stratasys · 2026-07 · tds
  24. TECAMID 66 GF30 black (PA66-GF30) — stock shape properties Ensinger · 2026-08 · tds
  25. BambuLab PLA Basic vs PLA Tough vs PLA-CF — results spreadsheet My Tech Fun (Igor Gaspar) · 2026-08 · test
  26. Polymaker PLA Pro vs PLA-CF — results spreadsheet My Tech Fun (Igor Gaspar) · 2026-08 · test
  27. Carbon Fiber PLA vs META-PLA vs PLA+ vs PLA by Sunlu — results spreadsheet My Tech Fun (Igor Gaspar) · 2026-08 · test
  28. Mechanical Properties of Additively Manufactured Polymeric Materials — PLA and PETG — For Biomechanical Applications Polymers 16(13):1868 · 2024-06 · paper
  29. PLA — material guide Prusa Knowledge Base · 2026-08 · doc
  30. Emissions of Ultrafine Particles and Volatile Organic Compounds from Commercially Available Desktop Three-Dimensional Printers with Multiple Filaments (Azimi et al.) Environmental Science & Technology 50(3) 1260-1268 · 2016-01 · paper
  31. Ultramid Nylon Chemical Resistance guide (unmodified PA6 B27E and PA66 A27E) BASF · 2026-08 · tds
  32. Solubility Study of Ingeo Biopolymer Grades in Common Organic Solvents (NWPD003) NatureWorks · 2019-10 · tds
  33. Improve your 3D prints with chemical smoothing Prusa Research · 2026-08 · doc
  34. Effect of vapour smoothing in trichloromethane on 3D printed PLA — surface, mechanical and chemical structure Pitale, Keche & Chopra, Engineering Research Express 6(4) 045579 · 2024-12 · paper