3DXTech Obsidian PA6+GF Snow 1.75mm 1kg [Markforged ONYX Alternative] 800cc

3DXTech Obsidian PA6+GF Snow 1.75mm 1kg [Markforged ONYX Alternative] 800cc

£126.53 £105.44 ex. VAT

In stock

£126.53 £105.44 ex. VAT

Obsidian™ PA6+CF filament was formulated to be a lower-cost drop-in Markforged Onyx Alternative suitable for all Markforged printers.

Availability: In stock SKU: 73120
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Obsidian™ Glass Fiber Reinforced PA6 [Markforged ONYX Alternative]
Markforged Obsidian Red
Obsidian™-GF Glass Fiber Reinforced PA6 filament is designed to provide vibrant colour options in an engineering-grade material for your Markforged printer. This lower-cost alternative to Markforged Onyx™ is compatible with all Markforged printers. Developed after thorough analysis and testing on both our in-house Markforged printer and through multiple external beta testers, Obsidian™-GF ensures a seamless printing experience, delivering parts with an outstanding appearance and excellent mechanical properties. Made from premium chopped glass fiber and PA6 copolymer, Obsidian™-GF allows customers to choose brilliant colours, maintain excellent mechanical properties, and save money when using a Markforged printer.

Don’t have a Markforged printer? No problem – Obsidian™-GF is also compatible with all non-Markforged printers that can print PA6+GF. Enjoy the excellent strength, stiffness, and appearance of this specialty material without overspending on Markforged Onyx™.

Benefits of Obsidian™-GF PA6+GF [Markforged Onyx Alternative]:

  • Seamless Onyx™ Replacement: Works without any changes to print settings.
  • Colour Variety: Available in over 9 brilliant colours.
  • Enhanced Ductility: More ductile and less brittle than CF-reinforced PA6.
  • Cost-Efficiency: Up to 30% savings compared to Markforged Onyx™.
  • Exceptional Strength and Stiffness: Provides robust and rigid parts.
  • Chemical Resistance: Resistant to aliphatic hydrocarbons like oil, gas, and lubricants.
  • Dimensional Stability: Features low warp, shrink, and CTE for superior dimensional stability.
  • Printer Compatibility: Compatible with Markforged FX20, X7, X5, X3, Mark Two, Onyx Pro, and Onyx One printers.
  • Technical Data Sheet Available

Filament Specifications:

  • Diameter: 1.75mm +/- 0.05mm

Markforged Print Recommendations:

Obsidian™-GF is formulated to be a drop-in replacement for Onyx™ without requiring any changes to print settings.

Recommended Print Settings for Non-Markforged Printers:

  • Extruder Temperature: 265-285°C
  • Bed Temperature: 90-110°C
  • Nozzle: Hardened steel nozzle recommended.
  • Bed Preparation: Magigoo Bed Prep and 3DXTECH Polyimide Tape yield the best results.
  • Heated Chamber: Recommended for optimal performance.
  • Supports: AquaTek™ water soluble X1 USM Universal Support Material is ideal for complex models.
  • Drying Instructions: Dry at 90°C for 4 hours if the filament shows signs of moisture.

Abrasive Material Advisory

This filament is particularly abrasive compared to other 3D printing materials. Standard brass nozzles can wear out very quickly, leading to inconsistent nozzle diameters and extrusion issues.

Recommendation: Use hardened steel nozzles with this filament to maximize the toolhead’s lifespan and ensure the quality of your prints. Hardened steel nozzles are often inexpensive and can be easily installed according to your printer manufacturer’s instructions.


Disclaimer (of course): This technical information is furnished without charge or obligation and accepted at the recipients sole risk. The information provided in this data corresponds to our knowledge on the subject at the date of its publication. This information may be subject to revision as new knowledge and experience becomes available. The data provided should not be used to establish specification limits or used alone as the basis of design; they are not intended to substitute for any testing you may need to conduct to determine for yourself the suitability of a specific material for your particular purposes. Since we cannot anticipate all variations in actual end-use conditions, 3DXTech makes no warranties and assumes no liability in connection with any use of this information.



Highly durable, flexible material.

Nylon has high impact and abrasion resistance; offering a high amount of tensile strength whilst also being a flexible material. It is one of the most heat-stable filaments, remaining unchanged in high temperature environments. 

It is hygroscopic, meaning that the filament will absorb moisture easily which will cause prints to warp and fail. This can be circumvented by keeping the filament in an air-tight, dry environment. Nylon can warp easily; depending on the printer and slicer used, some trial and error may be needed to prevent this. Printed items will degrade from UV radiation if left in sunlight for long periods of time.

Used for: Gears, Screws, and Cable ties.

Some manufacturers provide PA6 & PA12 Nylons, PA12 has increased moisture stability and is more resistant to moisture absorption. The same applies to Nylon 66 compared to Nylon 6.




Very High





Recommended Settings

Print Temp

225°C -265°C

Cooling Fan Off

Temp may vary on brand

Bed Temp

70°C – 90°C

Temp may vary on brand

Print Surface

Heated Bed Required
Enclosure Required

Example Prints

Additional information

Weight0.5 kg
Filament Brand


Filament Colour


Filament Diameter


Filament Type

Glass Fibre, Nylon

Filament Weight


Filament Range

3DXTech Obsidian

Filament Weight



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