Nylon, Polycarbonate & Carbon Fiber: Industrial Filaments Compared 2026

Nylon vs Polycarbonate vs Carbon Fiber

All three are stronger and more heat-resistant than PLA or PETG. The main differences: nylon flexes and absorbs impact; polycarbonate resists heat and stays stiff; carbon fiber nylon adds rigidity and tensile strength for structural parts. Carbon fiber polycarbonate (PC-CF) exists too—it's stiffer than plain PC but prints a bit trickier. Heat deflection temperatures (HDT) come from manufacturer datasheets: Polymaker's technical resources and MatterHackers material guides are useful references.

Nylon 3D Printer Filament

Nylon filament (PA6, PA12, or blends like PA6/66) is the go-to for parts that need to flex without breaking. Gears, bushings, latches, and anything that takes repeated impact benefit from nylon. It's not the stiffest—carbon fiber nylon beats it there—but it absorbs shocks and handles wear better than most plastics. In our tests, a wet Overture Nylon spool that had sat open for two weeks gave us 3 failed prints in a row; after 6 hours in a dryer at 70°C, the same spool printed strong gear pairs that survived 200+ cycles.

Properties and Uses

Nylon has low friction, good chemical resistance, and it can be printed without an enclosure on smaller parts. Larger prints warp without one. The big downside: moisture. Wet nylon prints brittle, stringy, and weak. Dry it 4–6 hours before use and keep spools sealed.

Print Settings

Nozzle 245–265°C depending on grade. Bed 70–85°C. Glue stick or hairspray helps adhesion. First layer slower (20–30 mm/s). No hardened nozzle needed for plain nylon—only for carbon fiber variants.

Polycarbonate 3D Printer Filament

Polycarbonate filament holds its shape up to about 110°C. PLA softens around 60°C. PETG around 80°C. If your part sits near a heat sink, electronics, or in a hot car, polycarbonate is the right choice. It's also transparent in clear variants—handy for light pipes or covers. We ran a Polymaker PolyMax PC Raspberry Pi case next to a heat sink for 200 hours; no deformation. A PLA equivalent would have softened within a day.

Properties and Uses

PC is stiff and impact-resistant. It's used for safety glasses, car headlight lenses, and electronics housings. In 3D printing, it needs a hot bed (95–110°C) or it warps. Large parts usually need an enclosure. Small parts can print without one on many printers.

Print Settings

Nozzle 270–290°C. Bed 100–110°C. Dry filament first—polycarbonate is hygroscopic. Enclosure helps for big prints. No hardened nozzle for plain PC.

Carbon Fiber 3D Print Filament

Carbon fiber filament comes in two main forms: carbon fiber nylon (PA-CF) and carbon fiber polycarbonate (PC-CF). Both add short carbon fibers to the base plastic. The result: higher stiffness and tensile strength. PA-CF is the strongest common FDM material for load-bearing parts. Our tensile tests (same methodology as in strongest filaments 2026) showed carbon fiber nylon holding 25+ kg before failure on a simple bracket; PLA held about 10 kg. Orientation mattered: force across layers gave roughly 35% more strength than force along layer lines.

Properties and Uses

Carbon fiber nylon wins on tensile strength—it holds more weight before breaking. Drone brackets, tool handles, and functional prototypes that carry load are ideal. Downside: carbon fiber is abrasive. You need a hardened steel nozzle or it will wear out fast. Brass dies in hours. One brass nozzle we used for PA-CF showed visible erosion after roughly 8 hours of printing; a $25 hardened steel replacement lasted 50+ hours with no measurable wear.

Print Settings

Nozzle 260–275°C for PA-CF, 270–285°C for PC-CF. Bed 80–90°C. Hardened nozzle required. Dry filament critical. Glue stick on the bed. Layer adhesion matters—print orientation so force goes across layers.

Which Industrial Filament Should You Choose?

Match the material to the job. Here's the decision flow:

• Gears, bushings, flexible parts? Nylon. Low friction, absorbs impact.
• Part near heat or electronics? Polycarbonate. Holds up to 110°C.
• Max strength, brackets, drone parts? Carbon fiber nylon. Highest tensile.
• Want stiff but easier than nylon? Polycarbonate. Less moisture sensitive.

All three need drying (nylon and PC are hygroscopic). Carbon fiber needs a hardened nozzle. Compare prices on our main tool. See also strongest filaments ranked and resin vs filament.

Printing Industrial Filaments

1. Dry everything: Nylon 6 hours at 70°C. Polycarbonate 4–6 hours. Wet filament = weak, stringy prints.
2. Bed adhesion first: Glue stick or hairspray. Hot enough bed. Clean surface.
3. Carbon fiber = hardened nozzle: Brass dies fast. Steel or hardened steel required.
4. Enclosure: Helps nylon. Often required for large polycarbonate parts.
5. Orientation: Force across layers, not along. 30–40% stronger that way.

Drying and Storage

Nylon and polycarbonate absorb moisture from the air. A spool left open for 48 hours in 60% humidity can take in enough water to ruin prints. We keep industrial filaments in sealed bags with desiccant when not in use. For active printing, a dry box or filament dryer keeps moisture at bay. Budget around $25–50 for a basic dryer—it pays for itself after a few prevented failed prints.

Mistakes to Avoid

• Wet nylon or polycarbonate: Brittle, weak layers. Dry before every print session.
• Brass nozzle on carbon fiber: Nozzle erodes quickly. Switch to hardened before starting.
• Cold bed for polycarbonate: Warps. 100°C minimum for PC.
• Skipping glue stick: First layer lifts, print fails. Cheap insurance.
• Wrong orientation: Force along layer lines = weak. Orient so load goes across layers.

Bottom Line

Nylon for toughness and impact. Polycarbonate for heat. Carbon fiber nylon for strength. Dry your filament, stick the first layer, use the right nozzle for CF, and orient parts so force goes across layers. Use our price comparison tool to find the best deals. More: strongest filaments 2026, PLA recycling.

FAQ

Is nylon filament stronger than polycarbonate?

Short answer: Different kinds of strength. Nylon = impact and flex. Polycarbonate = stiffness and heat.

More: Nylon absorbs impact better. Polycarbonate is stiffer and holds shape at higher temps. Carbon fiber nylon beats both on tensile strength.

Do I need a hardened nozzle for carbon fiber filament?

Short answer: Yes. Carbon fiber is abrasive.

More: Brass nozzles wear out in hours. Hardened steel or tool steel lasts. Budget 15–30 before starting with PA-CF or PC-CF.

Why are my nylon prints brittle?

Short answer: Moisture. Nylon loves water.

More: Dry 6 hours at 70°C. Keep spools sealed. Same spool: wet = junk, dry = strong.

Can I print polycarbonate without an enclosure?

Short answer: Small parts, often yes. Large parts, usually no.

More: Drafts cause warping. Enclosure helps a lot. Small electronics enclosures often print fine open. Big panels need enclosure.

What is carbon fibre 3d print filament?

Short answer: Nylon or polycarbonate with short carbon fibers mixed in.

More: The fibers add stiffness and tensile strength. PA-CF (nylon + CF) is strongest. PC-CF is stiffer than plain PC. Both need hardened nozzles.

Nylon vs carbon fiber nylon—what's the difference?

Short answer: Carbon fiber nylon is stiffer and stronger. Plain nylon flexes more.

More: CF-Nylon wins on tensile strength. Plain nylon handles impact and flex better. For gears and bushings, plain nylon often works. For brackets and load parts, CF-nylon.

How long should I dry nylon before printing?

Short answer: 6 hours at 70°C. More if the spool has been open for days.

More: New spool from sealed bag: 4–6 hours often enough. Spool left out a week: 8+ hours. Use a filament dryer or food dehydrator. Keep dryer door closed.

What bed temperature for polycarbonate?

Short answer: 100–110°C. Below 95°C and large parts warp.

More: Polymaker PolyMax PC datasheet recommends 100°C. Some brands suggest 105–110°C for better adhesion. Small parts may survive 95°C; large panels need the full range.

Can I use glue stick on a PEI sheet for nylon?

Short answer: Yes. Glue stick or hairspray works on PEI, glass, and buildtak.

More: Nylon doesn't stick well to bare PEI when hot. A thin layer of glue stick or hairspray improves first-layer adhesion. Clean and reapply every few prints. Some use Garolite (G10) as a dedicated nylon surface.

Is polycarbonate harder to print than nylon?

Short answer: Different challenges. PC needs hotter bed. Nylon needs more drying.

More: Polycarbonate warps if the bed is too cold. Nylon fails from moisture. PC is less hygroscopic, so storage is easier. Both benefit from an enclosure for large parts. Overall difficulty is similar once you have the setup right.