3D Printing Info

Filament comparison

PETG vs PLA Stone

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

PETG guideStone-filled PLA guide

2 selected · all documented properties

Open these two in the interactive comparisonMore PETG comparisonsMore PLA Stone comparisons
PETG vs PLA Stone — documented properties and sources
PropertyPETGPETGStone-filled PLAPLA
Market snapshot
Listing priceUSD/kg; dated snapshots$19.99/kg median; $8.99–$69.99/kg across 21 dated product listings$22.99/kg median; $15.99–$49.16/kg across 6 dated product listings
Identity & Market
Base polymer / chemistryPolyethylene terephthalate glycol copolymer — PET with a glycol comonomer that suppresses crystallisation[1][2]PLA filled with stone or mineral powder — Formfutura StoneFil declares 40–50 wt% stone powder[3][4]
Densityg/cm³1.24–1.30 (ISO 1183)[1][2][5][6]1.22 (Bambu Lab PLA Marble) and 1.50–1.70 (Formfutura StoneFil), ISO 1183[4][3]
Typical priceUSD/kg1 kg spools cluster near 20[7][8][9]1 kg spools cluster near 21[10][8]
Price range across brandsUSD/kg12–70 across brands; IEMAI 12, ELEGOO 14, CHCKX 14, Bambu Lab 18–20, Hatchbox 26, Prusament 38, Prusament PETG V0 70[7][8][11][9][12][13]16–49 across brands; SUNLU 16, ELEGOO 19, Polymaker 21, Bambu Lab 25, Prusament 38, Filament PM MarbleJet 49 on 0.5 kg spools[14][8][10][9][15][16]
Market availability1–5Ubiquitous, every brand and retailer[7][8][14][9]Stocked by most mainstream brands[10][8][14]
Spool sizes & diameters1.75 and 2.85 mm; 0.75, 0.8 and 1 kg spools plus spool-less refills[8][9]1.75 and 2.85 mm; 0.5 and 1 kg spools plus refills[8][3]
Typical applicationsFunctional parts, enclosures and outdoor fittings that need more toughness and heat tolerance than PLA[1][2]Architectural models, sculpture and props with a matte mineral surface[4]
Diameter tolerance± mm±0.02 (Prusament)[1]Not documented
Printing Parameters
Nozzle temperature°C230–260 across brands; Prusament 250 ± 10, Polymaker 240–260[1][2][6]190–230 (Bambu Lab)[4]
Bed temperature°C60–90; Prusament 80 ± 10, Polymaker 60–70[1][6]35–45 (Bambu Lab)[4]
Enclosure / chamber requirement1–5Open frame is fine[6]Open frame is fine[4]
Part cooling fanAround 50 %; Polymaker specifies 20–60 %, less than PLA to protect layer bonding[1][6]Fan on[4]
Bed surface & adhesion aidTextured PEI, satin or powder-coated sheets. On smooth PEI a glue stick is used as a release agent, not an adhesive — PETG bonds to bare PEI hard enough to tear the sheet[1][6]Not documented
Maximum volumetric flow (mm³/s; see test conditions)mm³/s8–15 (PrusaSlicer guidance); My Tech Fun ran Bambu Lab PETG Basic at 13 mm³/s[17][18]Not documented
Warping tendency1–5Slight — corner lift on large flat parts[1][6]Not documented
Bed-adhesion difficulty1–5Needs the right surface or a thin adhesive — the problem is releasing the part, not sticking it[1]Not documented
Stringing / oozing tendency1–5Moderate — retraction tuning needed[1][6]Not documented
Overall printing difficulty1–5Easy — minor profile tuning[6]Easy — minor profile tuning; 0.2 mm nozzles are not usable[19]
Extruder requirementNot documentedNozzles below 0.4 mm are not compatible (Bambu Lab)[19]
Hardware Wear & Reliability
Nozzle hardness required1–4Brass fine indefinitely[17]Brass acceptable; hardened steel for volume work — Bambu Lab's compatibility table says no hardened nozzle is needed while the note under the same table groups PLA Marble with particle-filled materials that should always use one[19]
Abrasiveness1–5Non-abrasive[6]Moderately abrasive — stone fill[19][3]
Nozzle clog risk1–5Low — no special hot-end required and clogging is not among the listed drawbacks; Prusa lists no drybox and no hardened nozzle[20][21]Moderate — needs dry filament and a clean nozzle[19]
Heat-creep / jam sensitivity1–5Slightly sensitive[20]Not documented
Hotend requirementNo special hot-end required[20]Not documented
Moisture Behaviour
Moisture absorption (hygroscopicity)1–5Moderate (0.3–0.8 %) — Bambu Lab reports 0.40 % saturated at 25 °C / 55 % RH; Prusa measures only 0.07 % in 24 h and 0.10 % in 7 days at the drier 22 % RH[1][22]Moderate — 0.44 % saturated at 25 °C / 55 % RH[4]
Equilibrium moisture content at ~50 % RH%0.10 after 7 days at 24 °C / 22 % RH (Prusa Polymers); 0.40 saturated at 25 °C / 55 % RH (Bambu Lab)[1][22]0.44 saturated at 25 °C / 55 % RH (Bambu Lab)[4]
Drying temperature & time60–65 °C for 6–8 h[6][22]Not documented
Symptoms when wetBubbling and popping at the nozzle, stringing and a rough surface[1]Not documented
Effect of moisture on strengthPolymaker groups PETG with nylon, PVA and TPU as highly hygroscopic and shows a before-and-after-drying comparison; the loss appears as poor layer adhesion and weak, brittle layers rather than a published dry-versus-conditioned figure[23]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[23]
Storage requirementSealed with desiccant; Polymaker groups PETG with the highly hygroscopic materials[23][24]Not documented
Mechanical Properties
Tensile strength (XY)MPa38–51 (printed XY, ISO 527); Prusament 47 ± 2 at yield; 62 on My Tech Fun 4×4 mm bars[1][2][5][25]33 ± 4 printed XY, ISO 527 (Bambu Lab)[4]
Young's modulusMPa1500–2311 (printed XY, ISO 527)[1][2][5][6]2330 ± 240 printed XY, ISO 527 (Bambu Lab)[4]
Elongation at break%5.2–9.3 at break (printed XY, ISO 527); Prusament 5.1 at yield[2][5][6][1]6.7 ± 0.5 printed XY, ISO 527 (Bambu Lab)[4]
Flexural strengthMPa58–80 (printed XY, ISO 178); Prusament 66 ± 2[1][2][5][6]75 ± 5 printed XY, ISO 178 (Bambu Lab)[4]
Flexural modulusMPa1068–2277 (printed XY, ISO 178)[1][2][5][6]2920 ± 180 printed XY, ISO 178 (Bambu Lab)[4]
Charpy impact, notchedkJ/m²2.6 (PolyLite) to 11.6 (PolyMax) printed XY, ISO 179, notched; Prusament 6 ± 1[2][5][1]9.5 ± 2.6 printed XY, ISO 179, notched (Bambu Lab)[4]
Other impact dataCharpy unnotched does not break on Prusa's 4 J pendulum (ISO 179-1); Izod 3.37 kJ/m² on My Tech Fun printed bars[1][25]Charpy unnotched 24.0 printed XY (Bambu Lab, ISO 179)[4]
Layer adhesion / Z tensileMPa18 ± 4 (Prusa interlayer adhesion test); 42.8 printed Z for PolyLite PETG; 33 on My Tech Fun bars[1][2][25]30 ± 4 printed Z, ISO 527 (Bambu Lab)[4]
Brittleness1–5Moderate[1][2]Brittle — snaps with little warning[4]
Hardness (scale-specific)Shore A / Shore D / Rockwell74 Shore D (Prusa Polymers method); measured on printed bars at 68.2 for Extrudr PETG, 72 for Fiberlogy PETG and 72.8 for Prusament PETG[1][25][26][27]Not documented
Creep resistance / sustained load1–5Below average — a 12 mm bar sagged to 18.2 mm (Fiberlogy) and 19.4 mm (Bambu Lab Basic) over 5 days at 1.25 kg[25][18]Poor — no stone-filled creep test; plain printed PLA sagged from 12 to 16.2–21.8 mm over 5 days at 1.25 kg[28][29][30]
Fatigue / repeated-flex resistance1–5Moderate — 79 000–193 000 cycles at 30 % of tensile strength, about three times printed PLA (R = 0.2, 7 Hz)[31]Poor — no grade-specific S-N curve; plain printed PLA ran 38 000–49 000 cycles at 30 % of tensile strength and the mineral filler leaves a brittle compound[31][4]
Elasticity / flexibility1–5Slightly flexible in thin sections[1]Rigid[4]
Z strength as % of XY%84 (PolyLite, printed Z against XY tensile)[2]91 by tensile, 73 by flexural (printed, Bambu Lab)[4]
Thermal Properties
HDT at 0.45 MPa°C68 (Prusament) to 78 (PolyLite), ISO 75 at 0.45 MPa[1][2][6]56 (ISO 75, 0.45 MPa)[4]
HDT at 1.8 MPa°C65 (Polymaker) to 75 (PolyLite), ISO 75 at 1.8 MPa; Prusament 68[1][2][6]53 (ISO 75, 1.8 MPa)[4]
Glass transition (Tg)°C71–81 (DSC)[2][5][6]56 (DSC)[4]
Melting point / Vicat°CAmorphous — no melting point; Vicat 75–84 (ISO 306)[2][5][6]156 peak melt (DSC); Formfutura gives a 120–170 melting range for StoneFil[4][3]
Continuous service temperature°C61–66 — loaded bars begin to move at this temperature across six grades from four brands; Prusa publishes 68 for Prusament PETG[25][26][27][18][32]Not documented
Thermal expansion (CTE)µm/m·K65 at 30 °C (neat PETG, large-format printed bead, TMA)[33]Not documented
Flammability / UL 94Flammable; no UL 94 rating published for standard PETG, though flame-retardant V0 grades exist[34][24]Not documented
Environment & Chemical
UV resistance1–5Moderate — a season or two[1]Degrades within weeks outdoors[35]
Chemical resistanceWithstands acids, alkalis, oils and UV exposure — Polymaker names outdoor use as a result[24]Not documented
Water / humidity resistance in service1–5Good — minor absorption[1]Not documented
Food contactPET is the polymer of drinks bottles, but printed layer grooves harbour bacteria and no filament here carries a food-contact certification[24]Not documented
Biodegradability / compostabilityNot biodegradable[24]Not documented
RecyclabilityPET is widely recycled as bottle stock, but printed PETG waste is not accepted in household collection[24]Not documented
Health & Safety
Fume toxicity1–5Moderate — measurable VOCs and UFPs, ventilation advised[36]Low hazard — minimal VOC and particle emission[36]
Ultrafine-particle emission rateparticles/min≈5 × 10⁹ median for the PET-based T-Glase filament in the same chamber study, against ≈1 × 10⁸ for PLA[36]Not documented
Ventilation / filtration requirement1–5Open a window / occasional ventilation[36]None needed in a normal room[36]
Dust & fibre handling hazardNot documentedFormfutura's SDS sets an occupational limit of 1 mg/m³ for the stone powder and lists it as both a fibre and a particulate — do not dry-sand without extraction[3]
Post-Processing
Sanding & machiningSands poorly — the material is tough and gums rather than powders[20]Sands to a stone-like matte surface[3]
Painting & finishingPaint adheres poorly without abrasion and a primer[1]Not documented
Gluing & solvent weldingCyanoacrylate; no common solvent welds PETG cleanly[20]Not documented
Vapour / chemical smoothingNo practical vapour smoothing[1]Not documented
Support material pairingPrints its own supports; Polymaker rates PolyDissolve S1 for PETG[20]Support for PLA (Bambu Lab)[4]
Dimensional accuracy & detailStringing and blobbing are the usual accuracy limits, not shrinkage[1][6]Matte mineral surface hides layer lines; 55° overhangs and 30 mm bridges as for plain PLA[4]
Solvents & Solubility
Soluble inNo common workshop solvent; 1,2-dichloroethane destroys it inside a week and dichloromethane — a carcinogen — dissolves the surface.[37][38]Chloroform dissolves the PLA matrix (10 % w/v, 2–4 h at 23 °C) and leaves the filler as loose sludge; laboratory reagent.[39]
Softened or crazed byAcetone (+16 % weight over 1 year at 23 °C), ethyl acetate, toluene and DMF swell and soften it; methanol crazes it.[37]Acetone, ethyl acetate and toluene plasticise the matrix but dissolve <1 % even at 65 °C; acetone submersion crazes parts.[39][38]
Solvent welding & smoothing agentDichloromethane brushed on is the only agent that smooths PETG — a controlled carcinogen, not workshop stock.[38]Chloroform vapour attacks only the resin fraction, so the filler is left standing proud; no workshop-safe agent exists.[40][38]

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. Prusament PETG Technical Datasheet v1.1 Prusa Polymers · 2022-02 · tds
  2. PolyLite PETG Technical Data Sheet Polymaker Wiki · 2026-08 · tds
  3. StoneFil safety data sheet Formfutura · 2026-08 · msds
  4. Bambu Filament Technical Data Sheet — PLA Marble Bambu Lab · 2026-08 · tds
  5. PolyMax PETG Technical Data Sheet Polymaker Wiki · 2026-08 · tds
  6. Polymaker PETG Technical Data Sheet Polymaker Wiki · 2026-08 · tds
  7. PETG Basic — product page Bambu Lab US Store · 2026-08 · vendor
  8. Polymaker product catalogue Polymaker · 2026-08 · vendor
  9. Printed Solid product catalogue Printed Solid · 2026-08 · vendor
  10. PLA Marble — product page Bambu Lab US Store · 2026-08 · vendor
  11. Black PETG Filament 1.75 mm 1 kg — product data Hatchbox · 2026-08 · vendor
  12. IEMAI PETG 3D Printing Filament product page IEMAI 3D · 2026-08 · vendor
  13. CHCKX PETG 3D Printer Filament 1.75 mm 1 kg, Black CHCKX (Amazon US) · 2026-08 · vendor
  14. ELEGOO product catalogue ELEGOO · 2026-08 · vendor
  15. SUNLU High Speed PLA Marble 3D Printer Filament 1 kg SUNLU · 2026-08 · vendor
  16. Filament PM PLA MarbleJet technical data sheet Filament PM (Plasty Mladec) · 2026-08 · tds
  17. Max volumetric speed Prusa Knowledge Base · 2026-08 · doc
  18. BambuLab PETG Basic vs Translucent vs PETG-CF — results spreadsheet My Tech Fun (Igor Gaspar) · 2026-08 · test
  19. PLA Usage Guide Bambu Lab Wiki · 2026-08 · doc
  20. PET and PETG — Ultimate 3D Printing Materials Guide Simplify3D · 2026-08 · doc
  21. Filament Material Guide Prusa Knowledge Base · 2026-08 · doc
  22. Bambu Filament Technical Data Sheet — PETG HF Bambu Lab · 2026-08 · tds
  23. Wet Filament — signs, causes and drying Polymaker Wiki · 2026-08 · doc
  24. PETG — material basics Polymaker Wiki · 2026-08 · doc
  25. PCTG vs PETG comparison — results spreadsheet My Tech Fun (Igor Gaspar) · 2026-08 · test
  26. Extrudr PETG vs PCTG vs XPETG-CF — results spreadsheet My Tech Fun (Igor Gaspar) · 2026-08 · test
  27. Prusament PETG-CF vs PETG V0 vs PETG — results spreadsheet My Tech Fun (Igor Gaspar) · 2026-08 · test
  28. BambuLab PLA Basic vs PLA Tough vs PLA-CF — results spreadsheet My Tech Fun (Igor Gaspar) · 2026-08 · test
  29. Polymaker PLA Pro vs PLA-CF — results spreadsheet My Tech Fun (Igor Gaspar) · 2026-08 · test
  30. Carbon Fiber PLA vs META-PLA vs PLA+ vs PLA by Sunlu — results spreadsheet My Tech Fun (Igor Gaspar) · 2026-08 · test
  31. Mechanical Properties of Additively Manufactured Polymeric Materials — PLA and PETG — For Biomechanical Applications Polymers 16(13):1868 · 2024-06 · paper
  32. Prusament PETG — material page Prusa Polymers · 2026-08 · doc
  33. Effects of Fiber Orientation on the Coefficient of Thermal Expansion of Fiber-Filled Polymer Systems in Large Format Polymer Extrusion-Based Additive Manufacturing Materials 15(8):2764 · 2022-04 · paper
  34. Prusament PETG V0 Technical Datasheet Prusa Polymers · 2026-08 · tds
  35. PLA — material guide Prusa Knowledge Base · 2026-08 · doc
  36. 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
  37. Eastman Spectar copolyester — Chemical resistance (unstressed bars, 1 year at 23 °C) Eastman Chemical Company · 2026-08 · tds
  38. Improve your 3D prints with chemical smoothing Prusa Research · 2026-08 · doc
  39. Solubility Study of Ingeo Biopolymer Grades in Common Organic Solvents (NWPD003) NatureWorks · 2019-10 · tds
  40. 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