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PETG & related polymers · Material guide

Recycled PETG (rPETG)

PETG regranulated from polyester waste. Prusa's own testing shows a 9 % drop in tensile yield and a 17 % drop in interlayer adhesion against virgin Prusament PETG, with diameter tolerance…

4 product listings4 brands
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Understand the material

At a glance

Where it is used

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Sources—

Before you print

Setup difficulty
Easy — minor profile tuning; Spectrum describes printing as similar to standard PETG
Nozzle wear
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Read conditions and sources ↓
Read the full material overview

PETG regranulated from polyester waste. Prusa's own testing shows a 9 % drop in tensile yield and a 17 % drop in interlayer adhesion against virgin Prusament PETG, with diameter tolerance loosening from ±0.02 to ±0.05 mm.

Applications

Recycled PETG can perform the same broad organizing, holding and enclosure roles as virgin PETG when the chosen feedstock and grade meet the design requirements. Prusa lists mechanical parts and workshop holders for its recycled grade and reports that it is made from recycled Prusament PETG. The engineering benefit is retaining useful material in a functional application rather than assuming recycled material has unique mechanical advantages.

Prusament’s recycled-versus-virgin comparison shows lower tensile yield and interlayer adhesion than its virgin counterpart, even though heat deflection and modulus are similar. That makes highly stressed thin features less forgiving. Also separate unfilled recycled PETG from products such as PETG-rCF08, which add recycled carbon fibre and have different stiffness, brittleness and hardware requirements.

  • Workshop holders and mechanical parts ↗

    FDM · Prusament PETG Recycled · Manufacturer-listed applications

    Prusa lists these uses on its recycled PETG page. The page’s general statement about MK3 printer parts identifies PETG, so it is not evidence that those production parts use the recycled grade.

Sources
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Representative catalog values. Check the exact grade and its linked conditions before using a setting.

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Full value & sources

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Properties & source data

53 documented fields

Open a topic to explore the complete data. Each value keeps its original conditions, units and dated sources.

Material & market7 fields
Recycled PETG (rPETG) — Identity & Market
Property and unitPublished value and conditionsSources and dates
Base polymer / chemistryPETG regranulated from recycled polyester waste; Polymaker's Fiberon PETG-rCF08 adds 8 wt% recycled carbon fibre
3 sources
Density (g/cm³)1.27 (Prusament) and 1.30 (Fiberon PETG-rCF08), ISO 1183
2 sources
Typical price (USD/kg)1 kg spools cluster near 29
4 sources
Price range across brands (USD/kg)17–40 across brands; Filament PM RePETG 17, 3DXTech ECOMAX 26, GreenGate3D 32, Fiberon rCF08 40
4 sources
Market availability (1–5)Available from several mainstream brands
3 sources
Spool sizes & diameters1.75 and 2.85 mm; 0.5, 1 and 3 kg spools
2 sources
Diameter tolerance (± mm)±0.05 (Prusament PETG Recycled), against ±0.02 for virgin Prusament PETG
2 sources
Print settings8 fields
Recycled PETG (rPETG) — Printing Parameters
Property and unitPublished value and conditionsSources and dates
Nozzle temperature (°C)250 ± 10 (Prusament); 230–255 (Spectrum)
2 sources
Bed temperature (°C)80 ± 10 (Prusament); 60–80 (Spectrum)
2 sources
Enclosure / chamber requirement (1–5)Open frame is fine — Spectrum states a closed chamber is not necessary
1 source
Part cooling fan50 % (Prusament); up to 100 % (Spectrum)
2 sources
Bed surface & adhesion aidTextured PEI, satin or powder-coated sheets; on smooth PEI a glue stick acts as a release agent
2 sources
Bed-adhesion difficulty (1–5)Needs the right surface or a thin adhesive — the problem is releasing the part, not sticking it
2 sources
Stringing / oozing tendency (1–5)Moderate — retraction tuning needed; Polymaker names stringing as PETG's common quirk
1 source
Overall printing difficulty (1–5)Easy — minor profile tuning; Spectrum describes printing as similar to standard PETG
1 source
Nozzle wear & reliability4 fields
Recycled PETG (rPETG) — Hardware Wear & Reliability
Property and unitPublished value and conditionsSources and dates
Nozzle hardness required (1–4)Brass fine indefinitely
1 source
Nozzle clog risk (1–5)Low — recycled PETG prints on the same hardware as virgin PETG: no special hot-end, no drybox and no hardened nozzle
2 sources
Heat-creep / jam sensitivity (1–5)Slightly sensitive
1 source
Hotend requirementNo special hot-end required
1 source
Moisture & drying5 fields
Recycled PETG (rPETG) — Moisture Behaviour
Property and unitPublished value and conditionsSources and dates
Moisture absorption (hygroscopicity) (1–5)Moderate (0.3–0.8 %) — recycled PETG shares the virgin matrix, which reaches 0.40 % saturated at 25 °C / 55 % RH
1 source
Equilibrium moisture content at ~50 % RH (%)0.07 after 24 h and 0.10 after 7 days at 24 °C / 22 % RH (Prusa Polymers)
1 source
Symptoms when wetBubbling and popping at the nozzle, stringing and a rough surface
1 source
Effect of moisture on strengthPolymaker groups PETG with nylon, PVA and TPU as highly hygroscopic; no dry-versus-conditioned strength figures are published for this grade and the loss shows as bubbling and poor layer adhesion
1 source
Storage requirementSealed with desiccant; Polymaker groups PETG with the highly hygroscopic materials
2 sources
Strength & mechanical properties13 fields
Recycled PETG (rPETG) — Mechanical Properties
Property and unitPublished value and conditionsSources and dates
Tensile strength (XY) (MPa)43 ± 1.8 printed horizontal at yield, ISO 527-1 (Prusament), against 47 ± 2 for virgin Prusament PETG; Spectrum quotes 52 at yield on moulded specimens
3 sources
Young's modulus (MPa)1500 printed horizontal, 1600 printed vertical (Prusament, ISO 527-1) — the same as virgin Prusament PETG
2 sources
Elongation at break (%)4.5 at yield printed (Prusament); Spectrum quotes 400 at break on moulded specimens
2 sources
Flexural strength (MPa)63 ± 1 printed horizontal, ISO 178 (Prusament), against 66 ± 2 for virgin Prusament PETG
2 sources
Flexural modulus (MPa)1800 printed horizontal, ISO 178 (Prusament)
1 source
Charpy impact, notched (kJ/m²)12 ± 1 printed horizontal and 15 ± 3 printed vertical, ISO 179-1 notched (Prusament)
1 source
Other impact dataCharpy unnotched 25 ± 3 printed horizontal and 38 ± 11 printed vertical (Prusament, ISO 179-1)
1 source
Layer adhesion / Z tensile (MPa)15 ± 5 (Prusa Polymers interlayer adhesion test), against 18 ± 4 for virgin Prusament PETG
2 sources
Brittleness (1–5)Moderate
1 source
Hardness (scale-specific) (Shore A / Shore D / Rockwell)74 Shore D (Prusa Polymers method) — the same as virgin Prusament PETG
2 sources
Creep resistance / sustained load (1–5)Below average — no recycled-grade creep test; virgin PETG sagged from 12 to 17.1–20.4 mm over 5 days at 1.25 kg
4 sources
Fatigue / repeated-flex resistance (1–5)Moderate — no recycled-grade S-N curve; virgin printed PETG ran 79 000–193 000 cycles at 30 % of tensile strength
1 source
Elasticity / flexibility (1–5)Slightly flexible in thin sections
1 source
Heat & temperature3 fields
Recycled PETG (rPETG) — Thermal Properties
Property and unitPublished value and conditionsSources and dates
HDT at 0.45 MPa (°C)68 (ISO 75, 0.45 MPa) — the same as virgin Prusament PETG; Spectrum quotes 70
3 sources
HDT at 1.8 MPa (°C)68 (ISO 75, 1.8 MPa)
1 source
Flammability / UL 94Flammable; no UL 94 rating published for standard grades
1 source
Weather & chemical resistance4 fields
Recycled PETG (rPETG) — Environment & Chemical
Property and unitPublished value and conditionsSources and dates
Chemical resistanceWithstands acids, alkalis, oils and UV exposure
1 source
Food contactNot certified for food contact as filament
1 source
Biodegradability / compostabilityNot biodegradable
1 source
RecyclabilityThe feedstock itself — Spectrum describes collecting, shredding and re-homogenising PETG waste
1 source
Health & safety2 fields
Recycled PETG (rPETG) — Health & Safety
Property and unitPublished value and conditionsSources and dates
Fume toxicity (1–5)Moderate — measurable VOCs and UFPs, ventilation advised
1 source
Ventilation / filtration requirement (1–5)Open a window / occasional ventilation
1 source
Finishing & post-processing4 fields
Recycled PETG (rPETG) — Post-Processing
Property and unitPublished value and conditionsSources and dates
Sanding & machiningSands poorly — the material is tough and gums rather than powders
1 source
Gluing & solvent weldingCyanoacrylate; no common solvent welds PETG cleanly
1 source
Vapour / chemical smoothingNo practical vapour smoothing
1 source
Support material pairingPrints its own supports; Polymaker rates PolyDissolve S1 for PETG
1 source
Solvents & solubility3 fields
Recycled PETG (rPETG) — Solvents & Solubility
Property and unitPublished value and conditionsSources and dates
Soluble inNo common workshop solvent; 1,2-dichloroethane destroys it inside a week and dichloromethane — a carcinogen — dissolves the surface.
2 sources
Softened or crazed byAcetone (+16 % weight over 1 year at 23 °C), ethyl acetate, toluene and DMF swell and soften it; methanol crazes it.
1 source
Solvent welding & smoothing agentDichloromethane brushed on is the only agent that smooths PETG — a controlled carcinogen, not workshop stock.
1 source
How to read these values

Values describe representative grades, not every spool. Manufacturer datasheets and independent tests retain their source labels and dates. Printed orientation, test method, conditioning and formulation can change results. Unknown values are —. A listed use is not a certification. Shore A, Shore D and Rockwell hardness are separate scales.

Find a specific filament

Product listings and datasheets

4 listings

Historical USD/kg snapshots. Read each listing’s sale/from qualifiers, spool mass, source date, shipping and tax notes. Product figures are separate from the material summary.

Browse 4 products from 4 brands
Filament PMRePETG17.24 USD/kg

EUR 15.96 incl. 21 % VAT / 1 kg spool = $17.24/kg at 1.08 USD/EUR, shop.filament-pm.com, Aug 2026

Reground from the maker's own off-spec PETG production; colour cannot be specified.

Open product listing ↗
Filament PM RePETG — product-specific figures
Density (g/cm³)1.27 (ISO 1183/B)
Diameter tolerance (± mm)0.05
Nozzle temperature (°C)230–270
Bed temperature (°C)60–80 (TDS); the listing states 80–90
Flexural modulus (MPa)1880 (ISO 178)
Other impact data11 kJ/m² impact strength, ISO 179 (notch type and specimen not stated)
HDT at 0.45 MPa (°C)70 (ISO 75, load not stated)
Melting point / Vicat (°C)85 (Vicat, ISO 306)
3DXTechECOMAX R-PETG26.00 USD/kg

$26.00 / 1 kg spool, 3dxtech.com product catalogue, Aug 2026

Handle ecomax®-r-petg.

Open product listing ↗
3DXTech ECOMAX R-PETG — product-specific figures
Spool sizes & diameters1 kg and 4 kg reels; 1.75 and 2.85 mm
Nozzle temperature (°C)230–260
Bed temperature (°C)60–90
Enclosure / chamber requirement (1–5)Open frame is fine — heated chamber not required
Drying temperature & time65 °C for 4 h
GreenGate3DRecycled PET-G31.98 USD/kg

$31.98 / 1 kg spool (Clear), greengate3d.com, Aug 2026

3 kg spool listed at $89.99.

Open product listing ↗
GreenGate3D Recycled PET-G — product-specific figures
Spool sizes & diameters1 kg, 3 kg and 4 kg spools; 1.75 and 2.85 mm
Diameter tolerance (± mm)0.05 at 1.75 mm
Nozzle temperature (°C)205–250
Bed temperature (°C)85
PolymakerFiberon PETG-rCF0839.98 USD/kg

$19.99 / 0.5 kg spool = $39.98/kg, Polymaker product catalogue, Aug 2026

Handle fiberon-petg-rcf08. 8 wt% recycled carbon fibre; tensile 59.8 MPa printed XY.

Open product listing ↗
Polymaker Fiberon PETG-rCF08 — product-specific figures
Density (g/cm³)1.30 (ISO 1183)
Nozzle temperature (°C)240–270
Bed temperature (°C)60–70
Equilibrium moisture content at ~50 % RH (%)0.55 equilibrium water absorption at 70 % RH, 23 °C
Tensile strength (XY) (MPa)59.8 ± 0.3 (printed XY, ISO 527)
Young's modulus (MPa)3710.1 ± 151.1 (printed XY, ISO 527); Z 2651.9
Elongation at break (%)5.7 ± 1.0 (printed XY, ISO 527); Z 1.9
Flexural strength (MPa)94.6 ± 1.3 (printed XY, ISO 178); Z 47.8
Flexural modulus (MPa)3779.1 ± 40.6 (printed XY, ISO 178); Z 1622.2
Charpy impact, notched (kJ/m²)4.0 ± 0.9 (printed XY, ISO 179, notched)
Other impact dataCharpy unnotched 18.0 kJ/m² XY (printed, ISO 179)
Layer adhesion / Z tensile (MPa)41.1 ± 4.1 (printed Z, ISO 527)
Z strength as % of XY (%)69 (printed Z 41.1 vs XY 59.8, ISO 527)
HDT at 0.45 MPa (°C)68.6 (ISO 75, 0.45 MPa)
HDT at 1.8 MPa (°C)65.7 (ISO 75, 1.8 MPa)
Glass transition (Tg) (°C)69.7 (DSC)
Melting point / Vicat (°C)Vicat 81.6 (ISO 306)
Flammability / UL 94UL 94 HB at 1.5 mm
Electrical & ESD propertiesSurface resistivity >10^12 Ω (ANSI/ESD S11.11)
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