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Polymaker PETG Filament 1.75mm 1KG Galaxy Dark Grey

Polymaker PETG Filament 1.75mm 1KG Galaxy Dark Grey

By Polymaker · Filament & Resin · 3D Printing · More from Polymaker

  • 1.75mm diameter
  • 1kg spool
  • Print temp 240-260°C
  • Bed temp 60-70°C
  • Print speed up to 300mm/s

Price not listed

New
Used, refurbished, open-box

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Problems, parts and running costs

Summary

A high-flow PETG filament in a glitter-filled Galaxy Dark Grey, aimed at functional parts, outdoor use and cosplay builds. Check your nozzle and storage before you buy: Galaxy colors need a 0.4 mm or larger nozzle, and the material is hygroscopic, so dry it before printing.

Strengths

  • Prints smoothly with minimal stringing when kept dry.
  • Excellent layer adhesion reported by owners.
  • Galaxy glitter gives a premium look and hides layer lines.
  • Easy to print with little or no setting adjustment.
  • AMS compatible, with hardened spool edges.

Weaknesses

  • Hygroscopic: stringing and surface defects if not dried; popping or cracking when wet.
  • One owner reports a formula change that removed the metallic finish and altered flow, affecting tuned prints.
  • Some users report lower temperature resistance versus the older formula.
  • Galaxy colors require a 0.4 mm or larger nozzle to avoid clogs.
  • Batch-to-batch color and finish variation is possible.
  • Diameter tolerance is not stated by the manufacturer.

Verified specifications

MaterialPETG copolyester, new high-speed formula, with Galaxy glitter particles.
Diameter1.75 mm.
Spool net weight1 kg.
Nozzle temperature240-260 C.
Bed temperature60-70 C.
Print speedup to 300 mm/s with a standard nozzle; over 500 mm/s with a high-flow nozzle.
Max volumetric speedup to 22 mm3/s on stock hardware; up to 32 mm3/s with a high-flow hotend.
Cooling fan20-60%.
Retraction1-3 mm distance at 20-40 mm/s.
Drying60 C for 6 h per the TDS, or 65 C for 4 h per the shop strip.
Enclosurenot needed.
Build surfacePC and textured PEI recommended.
Glass transition temperature71.24 C.
Vicat softening temperature75 C.
Heat deflection temperature69 C at 0.45 MPa; 65 C at 1.8 MPa.
Decomposition temperature405.49 C.
Density1.30 g/cm3 at 23 C.
Melt index16.3 g/10 min at 230 C, 2.16 kg.
Water absorptionmax 0.51%.
Tensile strength47.96 MPa (X-Y), 45.71 MPa (Z).
Elongation at break9.33% (X-Y), 3.54% (Z).
Young's modulus2311.11 MPa (X-Y), 2202.91 MPa (Z).
Bending modulus2277.34 MPa (X-Y), 1958.74 MPa (Z).
Bending strength80.08 MPa (X-Y), 57.65 MPa (Z).
Charpy impact strength4.95 kJ/m2 notched (X-Y), 20.24 kJ/m2 (X-Y), 15.74 kJ/m2 (Z).
Chemical resistancegood to weak acids and oils/grease; fair to weak alkalis; poor to strong acids and strong alkalis.
Galaxy glitterusable with a 0.4 mm or larger nozzle.
AMS compatibilityyes, with hardened spool edges.
Food safetyno data; the manufacturer states no 3D printing material on the market is FDA food-safe compliant.
Full research notes and sources

Printing parameters and setup

Nozzle 240-260 C, bed 60-70 C, up to 300 mm/s with a standard nozzle and over 500 mm/s with a high-flow nozzle, cooling 20-60%, retraction 1-3 mm at 20-40 mm/s. No enclosure is needed, and PC or textured PEI is the recommended build surface. Galaxy Dark Grey needs a 0.4 mm or larger nozzle. The spool ships vacuum-sealed in a resealable bag.

Drying, storage and running costs

The material is hygroscopic, so dry it at 60 C for 6 h, or 65 C for 4 h, if it has been exposed, and store it sealed; the manufacturer recommends a PolyBox or PolyDryer. Ownership costs are drying time and electricity, desiccant or storage, possible nozzle replacement for glitter colors, and a build surface; there is no subscription or lock-in. The manufacturer shop lists Polymaker PETG Galaxy Dark Grey, new formula, 1 kg, at $24.99. Base Polymaker PETG is listed at $18.99, with the range running from $18.99 to $79.99 by color and weight. Bulk discounts on the shop: 15% off four spools, 25% off six, 35% off ten or more, and 10% off a first purchase.

Finish, color and the formula change

Owner feedback on the manufacturer site is mostly positive on printability and layer adhesion. A minority reports a formula change that altered finish and flow: one owner describes the metallic finish disappearing on a later spool, leaving a flat, muted color, with flow differences where old and new filament meet on tuned prints. Some users report lower temperature resistance versus the older formula, though the stated heat deflection temperature is unchanged. Color appearance may vary by batch. No independent instrumented test of this exact filament was found; the TDS values are manufacturer-reported typical values not intended for design specifications.

Is it worth it?

The source’s value thresholds place under about $20/kg as strong value for a high-flow PETG with documented properties, $20-30/kg as fair value where color effect, print speed, and drying needs decide it, and above $30/kg as weak value unless the Galaxy color effect or specific mechanical properties are required. Buyers needing only basic PETG may find lower-cost options; buyers needing guaranteed batch consistency should note the reported formula change.

Which model this is

This page covers Polymaker PETG, new high-speed formula, color Galaxy Dark Grey, 1.75 mm diameter, 1 kg spool, SKU PB05022. The manufacturer product handle is “petg” on the Polymaker shop. Do not merge with PolyLite PETG (old formula, being discontinued and replaced by Polymaker PETG), Fiberon PETG-ESD, PolyMax, or other Polymaker PETG color and size variants. The product is sold vacuum-sealed in a resealable bag. ASIN B0FNDHSZFD.

Sources

Manufacturer:

Independent reviews:

  • No independent instrumented test of this exact filament was found in search.

Owner reports:

  • No independent owner threads were found; owner feedback comes from reviews on the manufacturer product page.

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