Polymaker Fiberon™ PA612-CF15 / black/

It is designed for machine components, assembly fixtures, jigs, robotics, automotive parts, drones and end-use functional parts. It is particularly suitable where PETG, ABS or standard nylon cannot provide the required combination of stiffness, heat resistance and dimensional stability.

The recommended nozzle temperature is 250–300°C, with a build plate at 40–50°C. The official Fiberon profile supports speeds of up to 300 mm/s, but the practical maximum depends on the hotend, part geometry and required volumetric flow.

No. Fiberon™ PA612-CF15 is formulated for printing without an enclosure or an actively heated chamber. Warpfree™ technology and carbon fibres limit shrinkage and improve dimensional stability. An enclosure may still help maintain a more consistent ambient temperature when printing large parts.

Yes. A wear-resistant nozzle is strongly recommended because carbon fibres are abrasive and wear standard brass nozzles. Hardened steel, ruby and other nozzle materials designed for composite filaments are suitable.

Yes. Although PA612 absorbs considerably less moisture than PA6, it remains a polyamide and must be kept dry. Fiberon's current TDS specifies drying at 100°C for 10 hours. Feeding directly from a dry box or dryer is good practice for long prints.

No. The recommended starting setting is 0% part cooling. Avoiding strong cooling supports layer adhesion and reduces internal stresses. Cooling can be adjusted separately for specific bridges or complex overhangs, but the standard Fiberon profile has the fan switched off.

PA612-CF15 is less sensitive to moisture and retains its mechanical properties better in humid conditions. In Fiberon's tests, XY tensile strength was around 91.9 MPa when dry and 83.1 MPa after moisture conditioning, showing a relatively small reduction. PA6-CF can offer very high dry-state performance, but PA612-CF15 is the more balanced choice when humidity varies during use.