Obsidian FR-Nylon™

As Obsidian™ has quickly become one of our most popular materials, we saw an opportunity to expand the platform to meet growing industry needs. Obsidian FR-Nylon™ builds on that proven performance by adding flame-retardant capabilities for applications where safety, compliance, and reliability are critical.

Flame-Retardant Nylon Built for Safety-Critical Applications

Obsidian FR-Nylon™ is a flame-retardant nylon filament engineered to deliver enhanced mechanical performance, consistent print quality, and reliable fire protection for demanding applications. Designed to meet stringent safety standards, it achieves a UL94 V-0 rating at 3.0 mm, ensuring excellent resistance to ignition.

Validated across both Markforged and open-source printers,
Obsidian FR-Nylon™ provides dependable, repeatable results while maintaining excellent surface finish and dimensional stability. It serves as a true one-to-one alternative to Markforged’s Onyx FR at a better value, making it an ideal choice for engineers seeking performance, safety, and cost efficiency.

Flame-Retardant Performance
UL94 V-0 rating at 3.0 mm for reliable fire resistance


High Mechanical Strength
Durable, stiff parts for functional and end-use applications

Excellent Print Quality
Consistent surface finish and dimensional accuracy


Platform Versatility
Validated on both Markforged and open-source 3D printers

Cost-Effective Alternative
Comparable performance to Onyx FR at a better value

Product Comparison Testing

Markforged X7 Results


Testing Between Onyx-FR & Obsidian FR-Nylon.
Parts were printed on a Markforged X7
Nozzle Temp: 275°C
Print Speed: 30mm/s
Layer Height: 0.20mm
Infill: Solid

Testing data provided in this document was generated by an independent, third-party lab to ensure an unbiased comparison. For accuracy, each sample of our filament was tested directly against a corresponding sample from Markforged, using identical printers, settings, and part orientations. This standardized approach allows for a true one-to-one comparison, providing a clear picture of material performance across the same conditions.
See the TDS Report