Is polycarbonate stronger than PETG or nylon?

It is stronger in the ways that usually matter for a functional part, but not in every way. Polycarbonate has the highest impact resistance of any common desktop filament and the highest usable temperature — roughly 110–140°C depending on the blend, against about 80°C for PETG. It is also stiffer than nylon and holds its shape under sustained load. Where nylon wins is fatigue and abrasion: a hinge or a gear that flexes millions of times prefers nylon, because polycarbonate is stiff enough to eventually crack rather than bend. Choose PC for impact and heat, nylon for wear and flex.

What temperature do you print polycarbonate at?

Plain polycarbonate wants 290–310°C at the nozzle and 100–120°C at the bed; PC blends print acceptably from about 260–280°C. That upper figure rules out a lot of machines — a 260°C-limited hotend cannot melt plain PC properly, and pushing it produces weak, under-extruded parts that look fine and snap in the hand. Run part cooling at zero or close to it, since cooling air causes layer separation in PC exactly as it does in ABS. Keep the enclosure shut for the whole print and let the bed cool before opening it.

Do I have to dry polycarbonate filament?

Yes, and more urgently than any other common filament except nylon. Polycarbonate absorbs moisture from ordinary room air within hours, and wet PC prints with visible steam bubbles, a cloudy grey surface, stringing and a large loss of the impact strength you bought the material for. Dry it at 70–80°C for at least six hours before a print that matters, and feed it from a heated dry box during the print rather than from an open shelf. A part printed from damp polycarbonate can be weaker than the same part in PETG, which defeats the entire purpose.

Why does my polycarbonate part keep warping off the plate?

Because PC shrinks hard as it cools and your chamber is losing heat. Three fixes, in order of effect: put the printer in a sealed enclosure so the chamber sits above 50°C; print on garolite or on PEI with a thin glue-stick film, which grips PC better than a bare plate does; and add a wide brim to anything with a footprint. Beyond that, fillet the base of the part so shrinkage stress spreads instead of concentrating at a sharp corner, and slow the first layer right down. If a tall part still lifts, it is almost always chamber temperature rather than adhesion.

Is polycarbonate UV resistant enough for outdoor parts?

Not on its own. Unstabilised polycarbonate yellows and loses impact strength under sustained ultraviolet exposure, which surprises people because the sheet polycarbonate sold for glazing is UV-coated. Filament generally is not. For a part that lives outdoors, either paint or clear-coat the polycarbonate part with a UV-blocking finish, or use ASA instead if the heat requirement allows it. Our ASA guide at /blog/best-asa-filament-2026 covers that trade-off. Where a part needs both real UV stability and 120°C service temperature, that is usually a job for a service bureau in a different material.

When is it worth having PC parts printed by a service?

When the part is large, when it must not warp, or when a failure has real consequences. Polycarbonate is the material most improved by an actively heated build chamber — not an enclosure that happens to get warm, but a chamber held at temperature for the whole print, which is what keeps a 200mm PC part flat and fully layer-bonded. That is industrial hardware. Certification, traceable material and flame-rated PC grades point the same way. Browse the /providers directory to find shops running polycarbonate and other engineering thermoplastics, and send them the STL you were about to attempt.

Best Polycarbonate Filament in 2026 — Toughest PC Picks

The short version: the best polycarbonate filament for most people is Prusament PC Blend, because it prints at a temperature a normal all-metal hotend can actually reach and warps far less than the pure material. Step up to Polymaker PolyMax PC when you need the full impact strength, use Bambu Lab PC if your machine runs an AMS-style feeder, Overture PC while you are learning the material, and PC-CF when the part is large and must stay flat. All of them demand the same three things: a hot nozzle, a warm sealed chamber, and dry filament.

Polycarbonate is the strongest material you can put through a desktop FDM printer. It takes impacts that shatter PLA and crack PETG, it holds its shape at 110–140°C where PETG is already sagging, and it is optically clear in thin sections. It is also the least forgiving filament in common use — it drinks water out of the air, it shrinks as it cools, and it needs roughly 300°C to melt properly.

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Where Polycarbonate Sits Against the Alternatives

Four materials get proposed for functional parts. They are not interchangeable, and PC is only the right answer for two of the four columns below.

	PC	ABS/ASA	Nylon	PETG
Impact resistance	Highest of the four	Good	Very good	Moderate
Heat resistance	110–140°C	~100°C	~90–120°C	~80°C
Stiffness	High	Moderate	Low — flexes	Moderate
Abrasion / fatigue	Cracks eventually	Moderate	Best of the four	Moderate
Moisture sensitivity	Severe	Mild	Severe	Mild
Nozzle temperature	290–310°C (blends 260–280°C)	240–260°C	250–270°C	230–250°C
Difficulty	Hardest	Hard	Hard	Easy

Read that table as a filter rather than a ranking. If the part will not see impact or heat, PETG does the job for a third of the trouble. If it flexes or wears — gears, bushings, living hinges — nylon is the better polymer and you should not fight PC into that role. If it lives in sunlight, ASA is the material, because polycarbonate filament is generally not UV-stabilised.

Polycarbonate earns its difficulty in one specific place: parts that must survive being hit, dropped or clamped, at temperatures that would soften everything else. Drone frames, tool jigs, machine guards, motor mounts near a heat source, lamp and enclosure parts, anything that goes in a car in summer. That is where nothing else on a desktop machine comes close.

What Your Printer Needs Before You Buy a Roll

This is the section to read before the picks, because the wrong machine turns every roll below into an expensive brick of grey, brittle plastic.

A hotend rated to 300°C. Not 260°C, and not "300°C with the thermistor lied to". Plain PC needs 290–310°C to bond layers properly. Under-melted polycarbonate looks like a finished part and snaps like a biscuit. If your machine tops out at 260–280°C, buy a PC blend and nothing else.
An all-metal hotend. A PTFE-lined throat degrades and outgases well below PC temperatures.
A bed that holds 100–120°C — and holds it for a three-hour print, not for the first ten minutes.
A genuinely sealed enclosure. This is the biggest single factor in PC success. Our enclosed printer picks and the standalone enclosure guide both cover the options.
A way to keep the filament dry, during the print and not just before it. More on this below; it is the failure people misdiagnose most often.
A hardened nozzle if you are going anywhere near PC-CF. Chopped fibre widens a brass orifice within hours — the nozzle guide explains what that does to your extrusion width. A hardened steel nozzle set costs less than one wasted spool.

If you are buying a machine specifically for this work, check the published hotend maximum first and the enclosure second. The high-temperature models in the Anycubic FDM range, the ELEGOO FDM line and the Flashforge enclosed desktop printers are where to look — but confirm the temperature rating on the specific model rather than the range, because it varies inside every one of these lineups.

The Picks

Prusament PC Blend — Best Overall

A blend, and that is the point. Pure polycarbonate is miserable on a desktop machine; Prusa's blend trades a slice of heat resistance for a printing temperature around 270°C and markedly less shrinkage, which converts polycarbonate from a project into a material you can simply use. Diameter tolerance is the tightest in the category and every spool carries a batch report, so a part that has to press-fit or thread into hardware starts from a known quantity. It still wants an enclosure and dry filament — no blend removes those — but it will not fight you the way plain PC does. For most people printing functional parts, Prusament PC Blend is the correct first roll.

Polymaker PolyMax PC — Best Strength

When the part genuinely must not break, this is the roll. PolyMax is Polymaker's toughened polycarbonate, and the impact numbers land close to injection-moulded PC rather than to a typical printed part — the practical difference is that a dropped PolyMax bracket deforms where an ordinary printed one splits. It needs more from you: 280–300°C, a warm chamber and properly dried filament, with no shortcuts on any of the three. Layer adhesion when you get it right is excellent, which is what makes the strength show up in the Z axis instead of only across the layers. Buy Polymaker PolyMax PC for the part on the machine, not for the prototype.

Bambu Lab PC — Best for Enclosed Multi-Material Machines

If your printer is enclosed, reaches 300°C and runs an AMS-style feeder, the vendor's own polycarbonate with its shipped profile removes most of the tuning. It is wound on cardboard, feeds reliably through a multi-material unit, and the default settings are close enough that a first attempt usually succeeds. The polymer itself is unremarkable — competent PC, nothing exotic — but with a material this sensitive to chamber and flow settings, a profile that already works is worth paying for. Note that most multi-material units are not rated for filament this hygroscopic sitting in them for days; feed Bambu Lab PC from a dryer for long jobs.

Overture PC — Best Budget

Your first three polycarbonate prints will fail, and it is better that they fail cheaply. Overture's PC has looser diameter tolerance and warps more readily than the blends, so it is not the roll for the final part — but it teaches you exactly where your chamber loses heat and how much brim your geometry needs, at a price that makes the fourth attempt painless. It is also perfectly adequate for parts where "much stronger than PETG" is the requirement and the last 20% does not matter. Learn on Overture PC, then print the real thing in PolyMax or Prusament.

PC-CF — Best for Large Flat Parts

Polycarbonate's failure mode is scale: a 40mm mount is manageable and a 200mm plate curls off the bed. Chopped carbon fibre cuts shrinkage substantially and adds a large jump in stiffness, which makes fibre-filled PC the only realistic desktop route to a big, flat, dimensionally stable polycarbonate part. You also get a matte finish that hides layer lines and no risk of the cloudy look damp clear PC produces. The costs are a hardened nozzle — mandatory, not advisory — and a more brittle part that trades away some of PC's impact resistance for rigidity. PC-CF is the pick for drone frames, jigs and structural plates; the carbon fiber filament guide covers the filled-material family in full.

Drying Is Not Optional

More failed polycarbonate prints are caused by moisture than by every other factor combined, and the symptom is easy to blame on something else. Wet PC hisses and pops at the nozzle, strings between features, prints a cloudy grey surface instead of a clear or glossy one, and — the part that matters — loses a large fraction of the impact strength you paid for. A damp PC bracket can be weaker than the same bracket printed in PETG.

Polycarbonate picks up enough water from ordinary indoor air to matter within a few hours of opening the bag. Treat it like this:

Dry before every serious print: 70–80°C for six to eight hours. A partially dried roll is a partially strong part.
Print from a heated dry box, not from a shelf. On a long job the roll rehydrates faster than you print it. The dry box guide covers using a print-while-drying dryer as a live feeder, which is the setup this material really wants.
Store it sealed with fresh desiccant the moment the print finishes. Silica that has already absorbed its fill is decoration.

Printing PC Without Warping

Fan off. Zero part cooling, or single-digit percentages on small overhangs. Cooling air splits PC layers, exactly as it does with ABS.
Chamber above 50°C. Sealed enclosure, door shut, and leave it shut until the bed has cooled all the way down.
Garolite or glue-sticked PEI. Polycarbonate grips garolite better than any other common surface, and the garolite and PEI pairing also releases without tearing the sheet — plain PEI can bond to PC hard enough to damage both.
Wide brim, always. 8mm on anything with a footprint.
Fillet the base. Sharp corners concentrate shrinkage stress precisely where lift begins.
Scale for shrinkage. PC moves roughly 0.6–0.8%. Print a coupon, measure it, apply the correction once, and reuse it for that roll.
Slow down. 30–40mm/s on perimeters. PC needs dwell time at the nozzle to melt fully at any reachable temperature.

Print It or Order It

For brackets, mounts, jigs, drone frames and machine guards that fit on a desktop plate, a 300°C enclosed printer and a dried roll of PC blend will make parts that outlast the machine that made them. The automotive parts guide and the RC and drone picks cover the machines suited to this work, and how to choose 3D printing filament places PC against the rest of the lineup.

The calculation flips sooner with polycarbonate than with any other filament. Large flat parts need an actively heated build chamber holding temperature for the entire print — industrial hardware, not a desktop upgrade. So does anything needing certified material, a flame rating, or tolerances tighter than about ±0.2mm on a part that shrinks 0.8%. Browse the 3D Prototyping Hub provider directory to find shops running polycarbonate and other engineering thermoplastics, and send them the same file you were going to print.

Related Resources

Best 3D Printer Filaments in 2026 — the full material lineup
Best Nylon Filament in 2026 — the tougher choice for wear and flex
Best ABS Filament in 2026 — the cheaper high-temperature option
Best ASA Filament in 2026 — when the part lives outdoors
Best Carbon Fiber Filament in 2026 — including the PC-CF grades
Best Enclosed 3D Printers in 2026 — the chamber polycarbonate needs
Best Filament Dry Boxes in 2026 — the accessory PC cannot do without
Browse 3D Printing Providers — order large or certified PC parts from a vetted shop

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