Fiberon PA6-CF20 review: rigid parts, with dense infill and surface texture to check
At a glance
Prepared workflows produce promising rigid parts; rough handling surfaces, moisture preparation and dense-print warping shape its limits.

The setup
- PA6 with 20% carbon fiber
- Selected 1.75 mm, 0.5 kg spool
- Use exact material guidance for drying, hardened hardware and any post-treatment
Why consider it
- Promising rigid functional parts after preparation.
- Material profiles can produce attractive results.
What to weigh up
- Dense infill can change the warping result.
- The attractive surface may feel rough.
- Drying and abrasive-resistant hardware are prerequisites.
PA6-CF20 is a candidate for rigid functional parts on a prepared printer. Its successful customer accounts do not make it an everyday drop-in replacement for PLA. The decisive checks are the real infill density, the surface people will touch and the material-care routine.
Change the test when the part changes
| Feature of the real part | Include it in the trial |
|---|---|
| Dense or solid regions | Check warping with that density, not only a hollow demonstration model. |
| Hand-contact surface | Inspect texture by the material’s handling guidance; visual smoothness is not tactile smoothness. |
| Fine extrusion features | Qualify nozzle and layer-height behavior together. |
A detailed positive account still reports rough texture and slightly uneven extrusion through a 0.4 mm nozzle. Another encountered warping at full infill. Those observations make the intended geometry more important than a generic claim that the filament prints easily.
Keep preparation inside the workflow
Polymaker identifies the Fiberon product as the same formula formerly sold as PolyMide PA6-CF, with a possible shade change. It recommends drying and post-print treatment for best performance. Use current documented instructions and compatible equipment, not a customer’s improvised oven routine.
Pros & Cons Analysis
Based on supplied customer reviews and verified product documentation
Pros
- The material has a practical use case. Matching accounts describe replacement components and useful enclosed-printer results. Neither a hand-break check nor a successful installation establishes a certified load or lifetime.
- A prepared workflow can be repeatable. Several accounts describe clean printing after drying or with an appropriate preset. These reports support a trial, not skipping material care.
Cons
- A small hollow sample does not settle a solid part. A favorable account reports trouble at 100% infill. Include density and footprint in the representative test.
- Appearance and touch are separate. One detailed account describes a very rough surface despite liking the print. Assess exposed hand-contact areas and follow the material’s handling guidance; no improvised coating is prescribed here.
- The setup cost belongs in the buying decision. Manufacturer guidance calls for suitable hotend and hardened-nozzle hardware plus preparation. Household oven anecdotes are not substituted for that guidance.
Qualify density and touch before the final component
Choose PA6-CF20 when rigidity serves the design and the printer is prepared for an abrasive nylon. Keep the full-density region and exposed texture in the trial before repeating the part.
Frequently Asked Questions
Does a successful hollow sample prove a solid part will print well?
No. Matching feedback includes warping at full infill. Density and footprint belong in the qualification print.
Is Fiberon PA6-CF20 a different formula from PolyMide PA6-CF?
Polymaker describes it as the same formula under the Fiberon name, with a possible darker printed shade.
Technical Specifications
| Product type | Fiber-reinforced nylon filament |
|---|---|
| Reviewed formulation | PA6 with 20% carbon fiber |
| Nominal filament diameter | 1.75 mm |
| Manufacturer diameter tolerance | Not verified for this exact formulation |
| Package format | 0.5 kg spool |
| Nozzle guidance | Manufacturer starting range: 280–300°C nozzle; 40–50°C bed. Match the printer and build surface. Hardened nozzle required; confirm the filament’s minimum orifice. |
| Material care | Manufacturer drying guidance: 100°C for 10 hours; verify the supplied spool tolerates the cycle, then store dry. |
| Variant / handling limit | Not interchangeable with other PA6/PA12/PA612 Fiberon grades |