Bambu Lab PC FR

Bambu Lab PC FR Filament — 1.75 mm, 1 kg

PC FR is Bambu Lab's flame-retardant polycarbonate. Standard polycarbonate is already one of the toughest, most heat-tolerant materials you can run on a desktop printer — PC FR adds a flame-retardant package that meets the UL 94-2023 V-0 standard, meaning a vertically mounted test specimen self-extinguishes within 10 seconds. That combination makes it the filament to reach for when a part sits near electronics, motors, heaters or mains wiring and a PLA or PETG part simply wouldn't be appropriate.

It suits electrical enclosures and junction boxes, power-supply and battery housings, machine guards, light fittings, drone and RC components, jigs that live near heat sources, and functional prototypes for engineering, education and small-batch manufacturing. It's an engineering material rather than a beginner one — if you're running an enclosed printer and you're comfortable with ABS or ASA, PC FR is a logical next step.

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Key features

UL 94 V-0 flame retardant 
High heat resistance (~114 °C Vicat) 
High impact strength 
±0.03 mm diameter tolerance 
AMS compatible with RFID 
3 colours

Works with enclosed Bambu Lab machines (X1 series, P1S, P2S and similar) and any other enclosed printer that can reach 280 °C at the nozzle and 110 °C on the bed. A hardened steel nozzle is recommended — avoid soft brass-only nozzles, which wear faster with engineering materials.

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Print settings

• Nozzle temperature: 260–280 °C
• Bed temperature: 90–110 °C
• Chamber temperature: 45–60 °C — an enclosure is strongly recommended to prevent warping and cracking
• Part cooling fan: 0–60% — keep cooling low for maximum layer bonding
• Print speed: up to 300 mm/s; slower perimeters give stronger, cleaner walls
• Retraction: 0.8–1.4 mm at 20–40 mm/s
• Drying: 80 °C for 8 hours in a filament dryer or blast oven (or 90–100 °C for 12 hours on an X1-series heatbed)
• Nozzle: hardened steel recommended; 0.4 mm or larger

If you're printing on a Bambu Lab machine, select the built-in Bambu PC FR profile in Bambu Studio or Orca and let the RFID tag do the work — it's the fastest path to a good first print.

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Specifications

Material	PC FR (flame-retardant polycarbonate)
Diameter	1.75 mm
Diameter tolerance	±0.03 mm
Spool weight	1 kg (filament with spool)
Print temperature	260–280 °C
Bed temperature	90–110 °C
Density	≈1.18 g/cm³
Flame rating	UL 94-2023 V-0
Vicat softening temperature	≈114 °C
Drying	80 °C / 8 hours
Colours available	3 — Black, White, Gray

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Available colours

All three colours share identical specifications and print settings — pick whichever suits the job. Choose your colour from the dropdown above.

Black · 63100 
White · 63101 
Gray · 63102

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Tips from our workshop

Dry it, then keep it dry. Polycarbonate absorbs moisture quickly — faster than most filaments — and wet PC FR prints with popping, stringing, weak layers and a brittle finish. Dry a new or shelf-stored spool at 80 °C for 8 hours before the first print, and run it straight from a dryer or an AMS with fresh desiccant. In humid coastal parts of Australia this makes the difference between a strong part and a disappointing one.

Control the temperature swing. PC FR shrinks as it cools, so tall or wide parts can warp or crack mid-print in an open printer. Keep the enclosure closed, keep the part cooling fan low, use a brim on large footprints and print on a clean textured PEI or engineering plate with a light glue-stick layer for release. And remember the V-0 rating describes flammability under a standard test — it doesn't make a part suitable for load-bearing or certified electrical use on its own.