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Lukes Laboratory


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CarbonX™ PC+CF is made using Sabic Lexan® Polycarbonate and reinforced with premium high-modulus carbon fiber. This material offers excellent thermal properties, strength & stiffness, superior dimensional stability, and an amazing surface finish.

CarbonX™ PC+CF Carbon Fiber Reinforced Polycarbonate

CarbonX™ PC+CF is a high-performance carbon fiber reinforced polycarbonate filament. This material is ideal for anyone that desires a structural component with high heat, high stiffness, excellent surface quality, and dimensional stability. Polycarbonate has a Tg of 147°C and offers some of the highest thermal performance on the 3D printing market.

Benefits of CarbonX PC+CF Include:

  • High thermal properties, Polycarb itself has a Tg of 147°C
  • Amorphous structure gives it low, near isotropic shrinkage
  • Further improved stiffness and dimensional stability with the addition of carbon fiber reinforcement
  • Very low odor emitted while printing
  • Wide processing range of 280-310°C

Filament Specifications:

1.75mm and 2.85mm +/- 0.05mm in diameter

Recommended Print Settings:

  • Extruder: 280-310°C
  • Bed Temp: 110-120°C
  • Nozzle: We currently recommend a hardened steel nozzle with a minimum diameter of 0.4mm. We also carry Tungsten Carbide nozzles, which we love for engineering filaments.
  • Other: Ideal layer height is 60% of nozzle diameter. We do not recommend printing layers smaller than 0.2mm with carbon fiber reinforced filaments.
  • Bed Prep: Nano Polymer Adhesive or NorthPrint3d Bed Adhesive
  • Heated Chamber: Recommended
  • Supports: Water soluble works great for complex parts.
  • Drying Instructions: 120°C for 4 hours.

Abrasive Material

This material is particularly abrasive among 3D printing filaments. Users may find standard brass nozzles are chewed through very quickly compared to standard wear and tear. When worn through, the nozzle diameter will widen inconsistently and the printer will experience extrusion issues.

Because of this, it's strongly recommended this material be printed through a hardened steel nozzle rather than a softer metal. Hardened Steel Nozzles can often be inexpensive and easily installed depending on your printer manufacturer's instructions.


    Customer Reviews

    Based on 1 review
    Aaron Tragle
    An Amazing Filament

    I absolutely love this stuff, I've been printing it at 330c hotend 135c bed and ~80 degree chamber. I would definitely recommend a hotter chamber for this material, but I am making due with what I have.

    The only complaint I have with the 2kg variety is that the spool it comes on is not suitable for drying at the temps required. I respool portions of the large spool onto higher temp spools, it works with no issues.