3D Printing Info

Filament comparison

PLA Stone vs PVB

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

Stone-filled PLA guidePVB guide

2 selected · all documented properties

Open these two in the interactive comparisonMore PLA Stone comparisonsMore PVB comparisons
PLA Stone vs PVB — documented properties and sources
PropertyStone-filled PLAPLAPVBSPECIALTY
Market snapshot
Listing priceUSD/kg; dated snapshots$22.99/kg median; $15.99–$49.16/kg across 6 dated product listings$66.65/kg median; $49.32–$79.98/kg across 3 dated product listings
Identity & Market
Base polymer / chemistryPLA filled with stone or mineral powder — Formfutura StoneFil declares 40–50 wt% stone powder[1][2]Polyvinyl butyral — a printable thermoplastic whose surface can be smoothed with isopropyl alcohol instead of a hot solvent[3]
Densityg/cm³1.22 (Bambu Lab PLA Marble) and 1.50–1.70 (Formfutura StoneFil), ISO 1183[2][1]1.10 (Polymaker PolySmooth, ISO 1183); Prusament PVB 1.10[3][4]
Typical priceUSD/kg1 kg spools cluster near 21[5][6]1 kg-equivalent spools cluster near 80[6][7]
Price range across brandsUSD/kg16–49 across brands; SUNLU 16, ELEGOO 19, Polymaker 21, Bambu Lab 25, Prusament 38, Filament PM MarbleJet 49 on 0.5 kg spools[8][6][5][7][9][10]49–102 across brands; Polymaker PolySmooth 49 at 750 g, Prusament PVB 80–102 at 500 g[6][7]
Market availability1–5Stocked by most mainstream brands[5][6][8]Available from several mainstream brands[6][7]
Spool sizes & diameters1.75 and 2.85 mm; 0.5 and 1 kg spools plus refills[6][1]1.75 and 2.85 mm; 0.5 and 0.75 kg spools[6][7]
Typical applicationsArchitectural models, sculpture and props with a matte mineral surface[2]Display models and light guides where a layer-free surface matters more than strength[3]
Diameter tolerance± mmNot documented+/- 0.03 (Prusament PVB)[4]
Printing Parameters
Nozzle temperature°C190–230 (Bambu Lab)[2]215 +/- 10 (Prusament PVB)[4]
Bed temperature°C35–45 (Bambu Lab)[2]75 +/- 5 (Prusament PVB)[4]
Enclosure / chamber requirement1–5Open frame is fine[2]Open frame is fine[3]
Part cooling fanFan on[2]100 % part cooling (Prusament PVB)[4]
Bed surface & adhesion aidNot documentedSmooth PEI sheet or satin sheet; Prusa states a brim is not generally necessary[4]
Overall printing difficulty1–5Easy — minor profile tuning; 0.2 mm nozzles are not usable[11]Easy — minor profile tuning; it prints close to PLA[3]
Extruder requirementNozzles below 0.4 mm are not compatible (Bambu Lab)[11]Not documented
Hardware Wear & Reliability
Nozzle hardness required1–4Brass 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[11]Brass fine indefinitely[3]
Abrasiveness1–5Moderately abrasive — stone fill[11][1]Non-abrasive[3]
Nozzle clog risk1–5Moderate — needs dry filament and a clean nozzle[11]Moderate — needs dry filament and a clean nozzle; Prusa calls PVB very prone to absorbing moisture and requires a 60 °C, 4 h dry before every print[12][13]
Moisture Behaviour
Moisture absorption (hygroscopicity)1–5Moderate — 0.44 % saturated at 25 °C / 55 % RH[2]Very high (>2 %) — 2.36 % equilibrium water absorption (Polymaker PolySmooth), above every PLA and PETG grade here[3]
Equilibrium moisture content at ~50 % RH%0.44 saturated at 25 °C / 55 % RH (Bambu Lab)[2]2.36 equilibrium water absorption (Polymaker PolySmooth); 2.09 for PolyCast; Prusament PVB takes up 0.18 in 24 h and 0.35 in 7 days at 24 °C and 22 % RH[3][14][4]
Drying temperature & timeNot documentedMaximum 60 °C for 4-8 h depending on how wet the filament is (Prusament PVB)[4]
Effect of moisture on strengthPolymaker 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[13]Polymaker publishes no dry-versus-conditioned figures; at 2.36 % equilibrium uptake the material has to be kept dry to print cleanly[3][13]
Storage requirementNot documentedSealed with desiccant[13]
Mechanical Properties
Tensile strength (XY)MPa33 ± 4 printed XY, ISO 527 (Bambu Lab)[2]51.8 ± 0.7 printed XY, ISO 527 (PolySmooth); 53.2 ± 1.1 for PolyCast; Prusament PVB gives 50 +/- 5 at yield printed horizontal (ISO 527-1) and 57 +/- 1 on the filament (ISO 527)[3][14][4]
Young's modulusMPa2330 ± 240 printed XY, ISO 527 (Bambu Lab)[2]2199 ± 43 printed XY and 2010 ± 69 printed Z, ISO 527 (PolySmooth); Prusament PVB gives 1700 +/- 100 in both print directions (ISO 527-1)[3][4]
Elongation at break%6.7 ± 0.5 printed XY, ISO 527 (Bambu Lab)[2]5.7 ± 0.5 printed XY, ISO 527 (PolyCast)[14]
Flexural strengthMPa75 ± 5 printed XY, ISO 178 (Bambu Lab)[2]72 +/- 1 printed horizontal and 73 +/- 3 printed vertical, ISO 178 (Prusament PVB)[4]
Flexural modulusMPa2920 ± 180 printed XY, ISO 178 (Bambu Lab)[2]2233 ± 106 printed XY, ISO 178 (PolyCast); Prusament PVB gives 2200 +/- 100 horizontal and 2300 +/- 100 vertical (ISO 178)[14][4]
Charpy impact, notchedkJ/m²9.5 ± 2.6 printed XY, ISO 179, notched (Bambu Lab)[2]7 +/- 1 printed horizontal and 10 +/- 1 printed vertical, ISO 179-1 notched (Prusament PVB)[4]
Other impact dataCharpy unnotched 24.0 printed XY (Bambu Lab, ISO 179)[2]Charpy unnotched 55 +/- 7 printed horizontal and 59 +/- 12 printed vertical (Prusament PVB, ISO 179-1)[4]
Layer adhesion / Z tensileMPa30 ± 4 printed Z, ISO 527 (Bambu Lab)[2]26.3 ± 2.1 printed Z, ISO 527 (PolyCast); Prusament PVB gives 49 +/- 5 at yield printed vertical (ISO 527-1) and 9 +/- 1 on Prusa's interlayer adhesion test[14][4]
Brittleness1–5Brittle — snaps with little warning[2]Moderate[3]
Hardness (scale-specific)Shore A / Shore D / RockwellNot documentedShore D 77 (Prusa Polymers method)[4]
Creep resistance / sustained load1–5Poor — no stone-filled creep test; plain printed PLA sagged from 12 to 16.2–21.8 mm over 5 days at 1.25 kg[15][16][17]Not documented
Fatigue / repeated-flex resistance1–5Poor — 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[18][2]Not documented
Elasticity / flexibility1–5Rigid[2]Rigid[3]
Z strength as % of XY%91 by tensile, 73 by flexural (printed, Bambu Lab)[2]98 (Prusament PVB, printed vertical against horizontal tensile yield, ISO 527-1: 49 +/- 5 against 50 +/- 5) — the most isotropic printed material in this dataset[4]
Thermal Properties
HDT at 0.45 MPa°C56 (ISO 75, 0.45 MPa)[2]68 (PolySmooth) and 67 (PolyCast), ISO 75 at 0.45 MPa; Prusament PVB 63 (ISO 75 at 0.45 MPa)[3][14][4]
HDT at 1.8 MPa°C53 (ISO 75, 1.8 MPa)[2]66 (PolySmooth) and 53 (PolyCast), ISO 75 at 1.8 MPa; Prusament PVB 58 (ISO 75 at 1.8 MPa)[3][14][4]
Glass transition (Tg)°C56 (DSC)[2]70 (DSC) for both PolySmooth and PolyCast[3][14]
Melting point / Vicat°C156 peak melt (DSC); Formfutura gives a 120–170 melting range for StoneFil[2][1]Amorphous — no melting point; Vicat 70 (PolySmooth) and 67 (PolyCast), ISO 306[3][14]
Environment & Chemical
UV resistance1–5Degrades within weeks outdoors[19]Not documented
Health & Safety
Fume toxicity1–5Low hazard — minimal VOC and particle emission[20]Low hazard — minimal VOC and particle emission; none of these materials was in the chamber study[20]
Ventilation / filtration requirement1–5None needed in a normal room[20]Open a window / occasional ventilation[20]
Dust & fibre handling hazardFormfutura'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[1]Not documented
Post-Processing
Sanding & machiningSands to a stone-like matte surface[1]Not documented
Vapour / chemical smoothingNot documentedIsopropyl alcohol vapour smoothing is the point of the material — Polymaker markets PolySmooth for hands-free post-processing to a layer-free surface[3]
Support material pairingSupport for PLA (Bambu Lab)[2]PolyDissolve S1 is rated for PVB (Polymaker)[21]
Dimensional accuracy & detailMatte mineral surface hides layer lines; 55° overhangs and 30 mm bridges as for plain PLA[2]PolyCast is the investment-casting variant of the same chemistry — it burns out cleanly rather than being smoothed[14]
Solvents & Solubility
Soluble inChloroform dissolves the PLA matrix (10 % w/v, 2–4 h at 23 °C) and leaves the filler as loose sludge; laboratory reagent.[22]Isopropyl alcohol dissolves it; Prusa describes PVB as soluble only in IPA, and it is not water-soluble.[12]
Softened or crazed byAcetone, ethyl acetate and toluene plasticise the matrix but dissolve <1 % even at 65 °C; acetone submersion crazes parts.[22][23]Not documented
Solvent welding & smoothing agentChloroform vapour attacks only the resin fraction, so the filler is left standing proud; no workshop-safe agent exists.[24][23]Isopropyl alcohol: brushed or sprayed on for speed, or several hours in IPA vapour for a glass-like surface.[23][12]

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. StoneFil safety data sheet Formfutura · 2026-08 · msds
  2. Bambu Filament Technical Data Sheet — PLA Marble Bambu Lab · 2026-08 · tds
  3. PolySmooth Technical Data Sheet V5.4 Polymaker · 2024-11 · tds
  4. Prusament PVB Technical Datasheet v1.1 Prusa Polymers · 2022-02 · tds
  5. PLA Marble — product page Bambu Lab US Store · 2026-08 · vendor
  6. Polymaker product catalogue Polymaker · 2026-08 · vendor
  7. Printed Solid product catalogue Printed Solid · 2026-08 · vendor
  8. ELEGOO product catalogue ELEGOO · 2026-08 · vendor
  9. SUNLU High Speed PLA Marble 3D Printer Filament 1 kg SUNLU · 2026-08 · vendor
  10. Filament PM PLA MarbleJet technical data sheet Filament PM (Plasty Mladec) · 2026-08 · tds
  11. PLA Usage Guide Bambu Lab Wiki · 2026-08 · doc
  12. Prusament PVB — material page Prusa Polymers · 2026-08 · tds
  13. Wet Filament — signs, causes and drying Polymaker Wiki · 2026-08 · doc
  14. PolyCast Technical Data Sheet V5.4 Polymaker · 2024-11 · tds
  15. BambuLab PLA Basic vs PLA Tough vs PLA-CF — results spreadsheet My Tech Fun (Igor Gaspar) · 2026-08 · test
  16. Polymaker PLA Pro vs PLA-CF — results spreadsheet My Tech Fun (Igor Gaspar) · 2026-08 · test
  17. Carbon Fiber PLA vs META-PLA vs PLA+ vs PLA by Sunlu — results spreadsheet My Tech Fun (Igor Gaspar) · 2026-08 · test
  18. Mechanical Properties of Additively Manufactured Polymeric Materials — PLA and PETG — For Biomechanical Applications Polymers 16(13):1868 · 2024-06 · paper
  19. PLA — material guide Prusa Knowledge Base · 2026-08 · doc
  20. 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
  21. PolyDissolve S1 Technical Data Sheet V5.4 Polymaker · 2024-11 · tds
  22. Solubility Study of Ingeo Biopolymer Grades in Common Organic Solvents (NWPD003) NatureWorks · 2019-10 · tds
  23. Improve your 3D prints with chemical smoothing Prusa Research · 2026-08 · doc
  24. 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