All You Need to Know About Polycarbonate (PC) for 3D Printing

Polycarbonate (PC) is a family of thermoplastic polymers defined by the carbonate groups in their molecular structure. Engineering-grade PC is prized for its exceptional impact resistance, and certain grades are optically transparent, combining strength, durability and clarity in a single filament. This lightweight yet high-performance polymer is widely used across professional and industrial applications.

PC is not the easiest material to 3D print. Unlike PLA or PETG, it demands high extrusion and build plate temperatures, along with a properly enclosed setup to prevent warping. That extra complexity pays off, however: PC parts deliver outstanding thermal resistance, mechanical strength and, in some formulations, optical clarity that few other filaments can match.

Demand reflects this performance edge. According to Dataintelo, the global PC filament market reached USD 526.4 million in 2024 and is projected to grow at a CAGR of 7.8% between 2025 and 2033, reaching an estimated USD 1,064.3 million by 2033. PC is most commonly used in FDM filament form, though there are also PC resins compatible with photopolymerization processes.

History and Chemical Composition

Polycarbonate was patented in the 1950s by the German chemical company Bayer AG. It is produced through the polycondensation of bisphenol A and phosgene: an organic compound and a chemical compound, respectively. The bisphenol A is first converted into a salt, which then reacts with phosgene dissolved in a chlorine solution. This reaction yields polycarbonate.

Key Properties of PC Filament

Polycarbonate is valued for its resistance to impact, scratches and heat. It is also transparent and less dense than glass, giving it excellent optical properties for a plastic. That said, PC has two notable limitations: it is not resistant to chemicals or UV rays, so parts exposed to sunlight over long periods will degrade, and it should be avoided outdoors or in applications requiring long-term light exposure. It is also not recommended for food-contact applications, since the plastic can release bisphenol A particles over time.

3D Printing with Polycarbonate

Polycarbonate is primarily available as a filament for FDM 3D printing, and it requires specific settings to print successfully:

• Extrusion temperature: 260°C to 290°C (up to 320°C for some formulations)
• Build plate temperature: at least 90°C
• Chamber: enclosed, to limit temperature fluctuations
• Storage: dry, in a sealed container with desiccant (PC is hygroscopic and absorbs moisture readily)

PC has a strong tendency to warp, so reliable bed adhesion is essential throughout the print. To reduce warping, you can print a brim, which is a flat, single-layer ring of filament extending outward from the base of the model, to increase the surface area in contact with the plate.

A closed chamber also helps prevent deformation or cracking as the part cools, since PC is sensitive to sudden temperature changes. And because the filament is hygroscopic, printing with damp material can lead to print failures or weaker mechanical properties in the finished part, so proper dry storage matters as much as print settings.

Applications for PC Filament

Despite a more demanding printing process than other thermoplastics, PC is widely used in additive manufacturing because it produces parts that are heat resistant (up to 110°C), impact resistant and mechanically strong. Its applications span several fields:

• Mechanical and functional parts: gears, hinges, pulley bearings and other load-bearing components that need to withstand stress and repeated use
• Molds and tooling: particularly thermoforming molds, thanks to PC’s heat resistance and dimensional stability
• Functional prototyping: parts that need to closely simulate the strength and durability of final production materials
• Optical and transparent applications: protective covers, lenses and light fixtures, taking advantage of PC’s transparency and clarity
• Design and decorative objects: PC’s glass-like transparency and glossy finish also make it a popular choice for decorative 3D prints such as vases, lampshades and lighting fixtures, where visual appeal matters as much as strength.

PC Filament Manufacturers

Most manufacturers of 3D printing filaments offer polycarbonate in their range, including Nanovia, 3DXTech, Polymaker and Kexcelled, as well as machine manufacturers such as Prusa Research, Bambu Lab, Elegoo, Creality and Stratasys, some of whom offer PC-ABS, combining the resistance of polycarbonate with the flexibility of ABS. The price of a spool varies according to the brand and the quantity, but often is between $30 and $60 for 750 grams.

Finally, you should know that PC can be reinforced with fibers, such as carbon or glass, to increase the strength of the material while making it lighter. This is not as common as with ABS or PLA, but it is possible from a chemical point of view. The addition of fibers increases the price of a coil. For example, it costs €65.99 for 800 grams of carbon fiber reinforced PC filament from Prusa.

Frequently Asked Questions about PC Filament

What is PC filament?

PC filament is a 3D printing material made from polycarbonate, a family of thermoplastic polymers defined by the carbonate groups in their molecular structure. It is valued for its exceptional impact resistance, heat resistance and, in some grades, optical transparency, making it a popular choice for engineering, functional prototyping and design applications.

Is PC filament food safe?

No. PC filament is not recommended for food-contact applications, since the plastic can release bisphenol A (BPA) particles over time. It is also not resistant to chemicals, which further limits its suitability for applications involving food or drink.

Does PC filament need to be dried?

Yes. PC filament is hygroscopic, meaning it readily absorbs moisture from the air. Printing with damp filament can cause print failures or weaken the mechanical properties of the finished part, so it should be stored in a dry, sealed container with desiccant between uses.

What temperature is needed to 3D print PC filament?

PC filament typically requires an extrusion temperature between 260°C and 290°C, with some formulations needing up to 320°C, along with a build plate heated to at least 90°C. An enclosed print chamber is also recommended to limit temperature fluctuations and reduce the risk of warping.

What is PC filament used for?

PC filament is used across a range of applications, including mechanical and functional parts such as gears and hinges, thermoforming molds, functional prototyping, optical and transparent components like lenses and protective covers, and decorative objects such as vases and lampshades that take advantage of its glass-like transparency.

Does PC filament need ventilation?

Yes. Polycarbonate filament releases fumes during the printing process, which can be harmful if inhaled in high concentrations. It is advisable to use a 3D printer with an enclosed build chamber and a ventilation system to minimize any potential health risks.

What is PC-FR filament?

PC-FR is a flame-retardant grade of polycarbonate filament. Thanks to its superb flame retardancy, PC-FR is well suited to electronics, automotive and mechanical applications where fire safety standards are a key requirement.

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*Cover Image: Applications printed with Polymaker’s PolyMax PC. Photo Credit: Polymaker