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Original price $275.00 - Original price $275.00
Original price $275.00
$275.00 - $275.00
Current price $275.00
Color: Red
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Obsidian™-GF is a Glass Fiber reinforced PA6 that was formulated to print using stock Onyx™ settings. This is an excellent drop-in replacement for Markforged Onyx™ that offers many much-awaited colors in an engineering-grade material.

3 Colours in stock in New Zealand, White, Red and Blue

1kg of Obsidian vs 750g Markforged Onyx

Alternative to ONYX suitable for all Markforged printers DROP IN.

IMPORTANT: 3DXTech recommend to dry this filament on 1st use as it can be very hydroscopic even if new.

  • Drying Instructions: 90°C for 4 hours if the filament exhibits signs of moisture


Obsidian™-GF Glass Fiber Reinforced PA6 filament was formulated to offer rich colorful options in an engineering-grade material for your Markforged printer.

Obsidian™-GF is a lower-cost drop-in Markforged Onyx Alternative suitable for all Markforged or any good printer that can use engineering filaments.

We developed this material after extensive analysis and testing on our own in-house Markforged printer and many outside beta testers. The result is a seamless printing experience that produces parts with an outstanding appearance and excellent mechanical properties. Made using premium chopped glass fiber and PA6 copolymer, Obsidian™-GF is an excellent alternative to Onyx™ that allows our customers choose brilliant colors, excellent mechanical properties, and save money when using your Markforged printer.

Don’t have a Markforged printer? That’s no problem – Obsidian™-GF is also compatible with all non-Markforged printers that are suitable for printing PA6+GF.  Take advantage of the excellent strength, stiffness, and appearance of this specialty material without over spending on Markforged Onyx™.

 Technical data sheet for this product here

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

  • Drop-in for Onyx™ without any changes required to print settings
  • >3 Brilliant Colors
  • >9 More ductile (less brittle) than CF reinforced PA6/li>
  • >30% savings vs. Markforged Onyx™
  • Excellent strength and stiffness
  • Resistant to aliphatic hydrocarbons (oil/gas/lubricants)
  • Superior dimensional stability (low warp/shrink/CTE)
  • Compatible with Markforged FX20, X7, X5, X3, Mark Two, Onyx Pro, and Onyx One printers

    Filament Specifications:

    Diameter:  1.75mm +/- 0.05mm

    1000g rolls and 3 colours here in New Zealand.

    NOTE: There are 9 colours available in the USA please let me know if you need a specific colour and I'll order in the next batch.

    Print Recommendations:

    Obsidian™ was formulated to be a drop-in for Onyx™ without any changes to the print settings.

    3DXTech Recommended Print Settings for Non-Markforged Printers:

    Formtech's Settings for what I have tweaked for my machines ( Non MF)

    • Extruder : 280°C - I run hot and seems to work very well
    • Bed: run at 110°C- Once again stops any lift off and keeps plastic under control
    • Brim: YES, helps with warping later on 10mm brim 1st layer
    • Perimeter walls 3min and top and bottom 4 min
    • Magigoo GF ( Nylon) on clean well washed G11 bed
    • Chamber warm but not hot, ambient temp from the bed

    Drying Instructions: 90°C for 4 hours if the filament exhibits signs of moisture

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