$84.99
Prusament PC Blend Carbon Fiber (PCCF) is Prusa's in-house polycarbonate blend reinforced with chopped carbon fiber. A mix that adds rigidity and toughness on top of the base material's already strong heat resistance. Compared to the standard PC Blend, it prints more easily, warps less, and is resistant to UV and common chemicals, all while staying solid in temperatures as high as 114 °C, and climbing to roughly 130 °C when annealed. That combination makes it well suited for load-bearing technical parts that need to retain their shape under heat and stress. The fibers are abrasive though, and a hardened steel nozzle is a must. Each 800g spool is built to a ±0.04 mm diameter tolerance and arrives with its own measured production data.
Prusament comes from the same people who design Prusa's printers, produced entirely in-house rather than sourced from a third party. Each spool is made to a ±0.04 mm tolerance with tightly controlled color, and the data lets you verify that consistency from the first meter to the last.
Unhappy with what the filament market offered, Prusa started making its own. The result is held to the standard a printer manufacturer expects from the material feeding its own machines.
It begins with premium-grade resin, and every production stage is checked for diameter, color, and mechanical performance, so nothing leaves the line unless the spool measures up.
Every spool comes with the real numbers from its run: diameter logged along the whole length, plus weight and ovality. No other filament maker hands you that, so you can confirm the quality rather than take it on faith.
Made in the EU and USA
Prusament is produced in Prusa's own plants in the Czech Republic and in Delaware, USA, not handed off to some anonymous supplier. Keeping production in-house means quicker shipping, lower import duties where they apply, and a supply chain Prusa controls end to end. No outside factory is free to swap a raw material behind the scenes, so there are no nasty batch surprises from a site nobody has set foot in.
More rigid, more durable, and friendlier to print than plain PC
Mixing carbon fiber into the polycarbonate lifts its strength, stiffness, and tensile numbers while holding on to the impact and wear resistance PC is known for. The fibers also tame the material, so it prints more predictably than unfilled PC Blend and handles demanding technical work without the usual polycarbonate fuss. In exchange, PCCF is a touch more brittle than the standard blend, and the carbon content gives finished parts a clean, matte black look.
Stable to 114 °C, and up to 130 °C once annealed
PCCF holds its form in heat as high as 114 °C, which keeps it usable next to motors, electronics, and other warm spots where PLA or PETG would sag. Need more margin? Annealing a finished part lifts that ceiling to around 130 °C. It's a reliable pick for heat-loaded components like fan shrouds, and anything else expected to keep doing its job as temperatures climb.
Big parts without the enclosure
The carbon fiber gives PCCF unusually good dimensional stability for a polycarbonate, with much less warping than the material is normally known for. That lets you run large models without an enclosure, something pure PC Blend tends to fight you on, and its low creep means working parts can drop straight into machinery. It also stands up well to UV and everyday chemicals, and it prints without any need to dry the spool first.
Nozzle, sheet, and surface, get these right first
The carbon fiber is abrasive, so a hardened steel nozzle isn't optional; brass wears out fast. For adhesion, reach for a satin or powder-coated sheet and keep it clean. Wipe it with IPA on a paper towel while it's still cold, since a warm sheet boils the alcohol off before it can lift any grease. Warm water with a drop of dish soap does the job too. Mind the bed, it sits at 110 °C for PCCF and will burn you.
Skip printing PCCF straight onto a smooth PEI sheet; it grips that surface hard enough to tear it. When you want a smooth finish, lay down a thin layer of glue stick (Kores works well) first. And if PCCF is a regular in your queue, a glue stick on the satin sheet is a habit worth keeping, as it shields the surface from gradual wear.
New spools with OpenPrintTag
Since October 2025, every Prusament spool arrives on a redesigned reel carrying a fully rewritable NFC tag built on the OpenPrintTag standard.
It stores the filament's key details and reads straight into the Prusa mobile app. The tag runs completely offline, is free to extend, and stays open for anyone to build on.
Read more in Prusa's announcement article
