3DXTech 3DXTech Obsidian PA6+CF [Markforged Onyx Alternative] Filament - 1.75mm (1kg)

Obsidian PA6+CF is a drop-in replacement for Markforged Onyx and is compatible with all Markforged printers. Obsidian delivers excellent performance, appearance, and significant cost savings.

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Obsidian PA6+CF filament was formulated to be a low-cost drop-in Markforged Onyx alternative and is compatible with all Markforged Printers. 3DXtech developed this material after extensive analysis and testing — the result was a seamless printing experience and filament that produces parts with an outstanding appearance and excellent mechanical properties.

Made using Premium high-modulus carbon fiber and PA6 copolymer, Obsidian is a drop-in alternative to Onyx.

Don't have a Markforged printer? No problem! Obsidian is also compatible with all non-Markforged printers that are capable of printing with PA6+CF!


  • Drop-in for Onyx without any changes required to print settings
  • >30% savings vs. Markforged Onyx
  • Excellent strength and stiffness
  • Resistant to aliphatic hydrocarbons (oil/gas/lubricants)
  • Superior dimensional stability (low warp/shrink/CTE)
  • Can be used with Markforged FX20, X7, X5, X3, Mark Two, Onyx Pro, and Onyx One printers


  • Extruder: 265-285°C
  • Bed Temp: 90-110°C
  • Nozzle: We currently recommend a hardened steel nozzle
  • Bed Prep: Magigoo
  • Heated Chamber: Recommended
  • Drying Instructions: 90°C for 4 hours if the filament exhibits signs of moisture
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