Best Filament for the Bambu Lab X1-Carbon and X1E (2026)

Quick picks

These are defaults by need, not a ranking.

Who this page is for

This page is for owners of a Bambu Lab X1-Carbon (X1C) or X1E, with or without an AMS, who want to know which spools suit the printer before buying. Bambu's X1C quick start guide and X1E technical specification both list a 1.75 mm filament diameter, and every spool here is 1.75 mm. For nozzles, hotends and build plates that fit, see the X1-Carbon printer page and the X1E printer page. If you own a P1S or P1P instead, see our P1S and P1P filament page.

The table is grouped by material, not ranked. The last four are carbon-fiber filaments. Both printers can run them on the stock nozzle.

What can the X1C and X1E print, per Bambu?

Enclosure and chamber heat. Both printers are enclosed. Bambu's filament guide lists the X1 Series among the enclosed printers it recommends for ABS, ASA, PC, PA and their fiber-reinforced versions, which "require higher heatbed and chamber temperatures to suppress warping and layer separation." The X1 FAQ says the X1C chamber is not actively heated: it "increases based on the temperature set for the heated bed and cannot be precisely controlled." The X1E adds active chamber heating up to 60 °C, which Bambu says "improves print quality, especially for filaments prone to warping such as ABS and PC." Bambu's X1E FAQ says the X1C can't be upgraded to an X1E with accessories.

Materials. Bambu's own spec tables list these supported filaments:

The X1C column comes from the X1C quick start guide, with the PPA and PPS row from the comparison table on Bambu's X1E page. The X1E column comes from the X1E technical specification. Nothing on this page needs the X1E's extra hotend headroom, which Bambu says is for materials "such as PPA-CF/GF, PPS and PPS-CF."

Temperatures. Bambu lists a 300 °C maximum hotend temperature for the X1C and 320 °C for the X1E. Both list a maximum build plate temperature of 110 °C at 220 V and 120 °C at 110 V. Every spool on this page has a published bed range that tops out at 100 °C or less. Fiberon PA6-CF20 calls for a 280–300 °C nozzle, which sits at the top of the X1C's range. Everything else tops out at 280 °C or less. Our ABS vs ASA guide explains the difference between those two materials.

Nozzle. Bambu's X1C quick start guide lists a hardened steel nozzle and hardened steel extruder gears, and its nozzle page says the "X1C comes standard with a 0.4mm hardened steel nozzle." The X1E technical specification lists the same: a hardened steel nozzle, hardened steel extruder gears and a 0.4 mm nozzle included. The hotends aren't interchangeable. Bambu's X1E FAQ says the X1 and X1C don't support installing the X1E's hotend assembly (heater, NTC and thermal grease), so check that a spare part names your model.

Heat in use. Bambu's filament guide says PLA is "not recommended for environments at about 50 ℃ or higher," and lists PETG, ABS, ASA, PC, PA-CF/GF and PET-CF/GF as better choices for high-temperature use. Our PLA vs PETG guide covers the first trade-off.

Should the door be open for PLA, PETG and TPU?

An enclosure can get too warm for low-temperature filament, and the filament can soften in the extruder and clog. This matters on both printers. Our PLA printing problems guide covers that kind of mid-print jam.

On both. Bambu's filament guide says that for filaments that soften below 60 °C, such as PLA and TPU, you should open the front door and/or remove the upper glass cover when the heatbed is set above 45 °C. For PETG, it gives the same advice when the bed is above 60 °C. Bambu's X1 FAQ also notes that the top glass cover can be opened for better cooling.

On the X1E. Bambu's chamber guide "strongly" recommends not enabling high chamber temperature for PLA, PETG, TPU, PVA and other low-temperature filaments. It advises setting the chamber to 0 °C, which turns chamber heating off. Its X1E FAQ rates PLA, PETG and TPU as "excellent printing (with enclosure open)." In a multicolor print, Bambu says the chamber runs at the highest chamber temperature set among the filaments in use. So don't mix a heated-chamber filament with PLA or PETG in the same AMS print.

AMS rules to check before you buy

Both printers work with Bambu's AMS. Bambu's X1 Series page advertises up to 16 colors from four AMS units in parallel, its X1E page says the X1E can connect four AMS units for up to 16 spools, and the AMS notes say multiple units need an AMS Hub. Bambu documents these limits in its AMS notes and filament guide:

• Spool size. The AMS "supports spools with a width of 50-68 mm and a diameter of 197-202 mm." Bambu's own spools are 200 mm × 67 mm according to its technical data sheets, so they fit.
• Cardboard spools. Bambu says: "We highly recommend using filament with plastic spools that fit correctly inside the AMS." If you use cardboard spools, it "strongly" advises a spool adapter or adapter ring "to reduce the risk of slippage and debris getting left behind in the AMS." Polymaker ships on recycled cardboard spools and says its spools "spin great in the AMS," but it doesn't publish their dimensions. Measure before loading.
• TPU. Bambu's AMS notes say to avoid TPU and other flexible materials, "as they may get stuck inside the AMS feed tube." Bambu sells TPU for AMS as an exception. See the TPU section below.
• ASA and ABS. Bambu's filament guide lists ASA as compatible with the AMS, and ABS as compatible with the AMS but not recommended for the AMS lite. Bambu's ABS store page lists the AMS 2 Pro, AMS HT and AMS as compatible.
• Fiber-reinforced filament. Bambu's AMS notes say to avoid "third-party fiber reinforcement materials (PA-CF/GF, PET-CF/GF, PLA-CF/GF, etc.)," which may wear the AMS PTFE tubes or break. Bambu exempts its own optimized PLA-CF, PETG-CF and PAHT-CF, which aren't on this page. Polymaker's own FAQ also says to "be careful when using any abrasive materials in the AMS."

Anything that doesn't qualify can still be printed from an external spool. Bambu's X1 loading guide puts the spool on the back spool holder and feeds it through the back PTFE tube. For the full list, see which filaments work in Bambu's AMS and AMS lite.

Everyday PLA

Bambu Lab PLA Basic (Black 10101, 1 kg, with spool)

PLA Basic is Bambu's everyday PLA for its own printers. Bambu's store page marks it "All AMS Series Compatible." Its TDS (V3.0) lists a 190–230 °C nozzle, a 35–45 °C bed, a 25–45 °C chamber and a 200 mm × 67 mm spool, which is within the AMS's spool limits. The RFID tag lets the AMS read its settings automatically. This listing includes a spool. Bambu also sells refills without one.

Bambu Lab

Bambu Lab PLA Basic (Black (10101), 1.75 mm, 1 kg, with spool)

Best for

Everyday PLA on Bambu Lab printers and AMS units (the TDS lists AMS-friendly 200 × 67 mm spool dimensions).

Skip this if

The part will see heat, or you'd rather buy the cheaper refill and reuse a spool.

Specs, strengths, and limitations

Material

PLA

Diameter

1.75 mm

Net filament

1000 g (filament only, not packaged weight)

Format

plastic spool

Maker's nozzle range

190–230 °C

Strengths

• Manufacturer states it is designed for high-speed printing, reaching 250–300 mm/s.
• Manufacturer states excellent toughness and Z-layer strength compared with general PLA.
• Manufacturer TDS lists AMS-friendly spool dimensions (200 mm × 67 mm).

Limitations

• Not suited to parts exposed to heat: the TDS lists a heat deflection temperature of 54 °C (1.8 MPa).
• The ABS spool is rated to 70 °C, which limits drying temperature on the spool.

View on Amazon ↗ (opens Amazon in a new tab)Details checked 2026-10-06 against the manufacturer. Price and availability are on Amazon.

Skip it if the part will see heat, or you already have empty Bambu spools and would rather buy a refill.

Polymaker PolyLite PLA (Black, 1 kg)

PolyLite PLA is the cardboard-spool alternative to PLA Basic on either X1. Polymaker's product page lists a 190–230 °C nozzle and a 25–60 °C bed. Polymaker answers "Is this material AMS compatible?" with "Yes! All Polymaker spools now have hardened edges that roll great in the AMS." Bambu still recommends an adapter for cardboard spools in the AMS, so plan on one or use the external spool. If you run the bed above 45 °C, follow the door-open advice above.

Polymaker

Polymaker PolyLite PLA (Black, 1.75 mm, 1 kg)

Best for

Everyday PLA prints, prototypes, and display models where a documented, easy-printing PLA is wanted.

Skip this if

The part will sit in a hot car, near heat sources, or needs toughness beyond standard PLA.

Specs, strengths, and limitations

Material

PLA

Diameter

1.75 mm

Net filament

1000 g (filament only, not packaged weight)

Format

cardboard spool

Maker's nozzle range

190–230 °C

Strengths

• Manufacturer states PolyLite PLA is designed for reliability and ease of printing.
• Manufacturer TDS lists no enclosure needed and a wide 190–230 °C nozzle window.
• Manufacturer publishes a full TDS with mechanical, thermal, and drying data.

Limitations

• Not suited to parts exposed to heat: the TDS lists a heat deflection temperature of 58 °C (1.8 MPa).
• Cardboard spool: Polymaker says its spools have hardened edges that work in the AMS, but Bambu Lab's general AMS guidance recommends an adapter or ring for cardboard spools. Check your unit.

View on Amazon ↗ (opens Amazon in a new tab)Details checked 2026-10-06 against the manufacturer. Price and availability are on Amazon.

Skip it if you want RFID auto-settings, or the part will see heat.

PETG for functional parts

Bambu Lab PETG Basic (Black 30105, 1 kg, with spool)

PETG Basic is Bambu's general PETG, and its store page marks it "All AMS Series Compatible." The TDS (V3.0) lists a 230–260 °C nozzle, a 65–75 °C bed and a 35–50 °C chamber. It suits brackets, clips and fixtures that need more heat resistance than PLA. Bambu has discontinued PETG HF and points buyers to PETG Basic instead. Those bed temperatures are above Bambu's 60 °C PETG threshold, so open the door or lift the top glass, and keep chamber heating off on an X1E.

Bambu Lab

Bambu Lab PETG Basic (Black (30105), 1.75 mm, 1 kg, with spool)

Best for

Functional and outdoor-use parts on Bambu Lab printers and AMS.

Skip this if

The part needs heat resistance above about 68 °C (TDS HDT at 1.8 MPa).

Specs, strengths, and limitations

Material

PETG

Diameter

1.75 mm

Net filament

1000 g (filament only, not packaged weight)

Format

plastic spool

Maker's nozzle range

230–260 °C

Strengths

• Manufacturer states the upgraded formula delivers PLA-level strength while keeping PETG toughness.
• Manufacturer states enhanced resistance to water, UV, and temperature for outdoor accessories.
• Manufacturer states the refined formula reduces stringing.

Limitations

• Heat resistance tops out around 68 °C: the TDS lists HDT 68 °C at 1.8 MPa (71 °C at 0.45 MPa).
• Needs drying and storage below 20% RH per the TDS; the ABS spool is rated only to 70 °C.

View on Amazon ↗ (opens Amazon in a new tab)Details checked 2026-10-06 against the manufacturer. Price and availability are on Amazon.

Skip it if the part needs more heat resistance than PETG offers. ASA is the better fit for that.

TPU for flexible parts

Bambu's filament guide marks TPU as compatible with open-frame and enclosed printers, but its X1E FAQ lists TPU among the materials it rates for "excellent printing (with enclosure open)." The AMS is the main limit, not the printer. Read our TPU compatibility guide for the background on hardness and feeding.

Bambu Lab TPU for AMS (Gray 53102, 1 kg, with spool)

This is the TPU to choose if you want flexible filament in the AMS. Bambu's store page lists "Seamless AMS & AMS lite Integration" and "All AMS Series Compatible." At a Shore hardness of 68D, which Bambu states on the store page, it is much firmer than 95A TPU, so parts are tough rather than soft. Bambu says it "must be dried before use," and says it isn't compatible with a 0.2 mm nozzle. The stock 0.4 mm nozzle isn't affected.

Bambu's own pages don't all agree. Its AMS notes say to avoid TPU in the AMS, and the filament guide's AMS table marks TPU "Not Compatible," without naming TPU for AMS. We follow the product's own page, but check Bambu's current guidance for your AMS unit.

Bambu Lab

Bambu Lab TPU for AMS (Gray (53102), 1.75 mm, 1 kg, filament with spool)

Best for

Multicolor prints on a Bambu Lab printer with AMS where you need tough, impact-resistant TPU parts.

Skip this if

You need a soft, highly flexible part (85A–95A) rather than a firm 68D one.

Specs, strengths, and limitations

Material

TPU (AMS-compatible)

Diameter

1.75 mm

Net filament

1000 g (filament only, not packaged weight)

Hardness

68D

Format

plastic spool

Maker's nozzle range

220–240 °C

Strengths

• Manufacturer states it is optimized for the AMS, and its store page marks it compatible with all AMS series, including the AMS lite.
• Manufacturer states it prints up to 60% faster than Bambu TPU 95A HF and greatly reduces stringing.
• Manufacturer states its RFID tag carries the print settings, which the AMS reads.

Limitations

• At 68D it is much stiffer than typical 95A TPU, so parts are tough rather than soft and squishy.
• Manufacturer says it must be dried before use and kept moisture-free during printing to prevent stringing.
• Not compatible with a 0.2 mm stainless steel nozzle, per Bambu Lab's store page.

View on Amazon ↗ (opens Amazon in a new tab)Details checked 2026-10-06 against the manufacturer. Price and availability are on Amazon.

Skip it if you need a soft, squishy part rather than a firm, tough one.

Bambu Lab TPU 95A HF (Black 51100, 1 kg, with spool)

TPU 95A HF is Bambu's high-speed 95A TPU, which Bambu says prints 3 times faster than its standard TPU 95A, for soft parts that need to withstand impact, collision and falling. Its store page marks it "All AMS Series NOT Compatible," so feed it from the back spool holder. Keep the bed at or below 45 °C, or open the door, and on an X1E leave chamber heating off.

Bambu Lab

Bambu Lab TPU 95A HF (Black (51100), 1.75 mm, 1 kg, filament with spool)

Best for

Fast single-color flexible parts such as bumpers, grips, and cases, fed from an external spool on a Bambu Lab printer.

Skip this if

You want to run flexible filament through an AMS or AMS lite for multicolor prints.

Specs, strengths, and limitations

Material

TPU (high-flow)

Diameter

1.75 mm

Net filament

1000 g (filament only, not packaged weight)

Hardness

95A

Format

plastic spool

Maker's nozzle range

220–240 °C

Strengths

• Manufacturer states it prints 3 times faster than standard Bambu TPU 95A.
• TDS lists breaking elongation above 650% (X-Y) and impact strength of 123.2 kJ/m² (X-Y).
• Manufacturer states it comes on a high-temperature reusable spool (PC + ABS, rated 90 °C).

Limitations

• Not fed by any AMS: Bambu's store page lists all AMS series NOT compatible. Bambu's TPU and X/A2L guides allow the AMS HT only as a sealed drying chamber, fed via its TPU outlet.
• Manufacturer calls it highly sensitive to humidity and says to dry it before use and after storage.
• Bed temperature window is narrow, 30–35 °C, and the TDS calls for glue on the plate.
• Color per the listing's selected variant; check the color before buying.

View on Amazon ↗ (opens Amazon in a new tab)Details checked 2026-10-06 against the manufacturer. Price and availability are on Amazon.

Skip it if you want flexible filament in multicolor AMS prints.

ASA and ABS

Both printers are enclosed, so these suit either one. All four makers below call for an enclosed printer. The X1E's heated chamber helps most with large or dense parts. For a wider comparison, see the ASA filament shortlist.

X1E chamber setting for ASA and ABS. Bambu's X1E chamber guide sets chamber heating off by default for ASA and ABS, because heating lengthens the warm-up and makes air filtration less effective. It suggests 60 °C for prints "prone to warping," meaning larger sizes or higher infill density, and for parts with higher strength requirements. On the X1C, the chamber only gets what the heated bed puts into it.

Polymaker ASA (Black, 1 kg)

Polymaker says its ASA prints with settings very similar to ABS: "Simply use an enclosed 3D printer to ensure optimal temperature control and minimize warping." Its product page printing tips give a 230–260 °C nozzle and a 75–95 °C bed, and says to keep the cooling fan off and print in a well-ventilated area. Its print settings block lists 240–260 °C. Polymaker suggests drying at 70 °C for 4 hours after brief exposure, or 7 hours after extended exposure. ASA suits outdoor and sun-exposed parts. It's on a cardboard spool, so use a spool adapter in the AMS.

Polymaker

Polymaker ASA (Black, 1.75 mm, 1 kg)

Best for

Outdoor and sun-exposed functional parts printed on an enclosed machine.

Skip this if

Your printer is open-frame or can't reach a 95 °C bed and 260 °C nozzle.

Specs, strengths, and limitations

Material

ASA

Diameter

1.75 mm

Net filament

1000 g (filament only, not packaged weight)

Format

cardboard spool

Maker's nozzle range

230–260 °C

Strengths

• Manufacturer states it is an alternative to ABS with improved weather and UV resistance.
• Manufacturer TDS lists a heat deflection temperature of 100 °C (1.8 MPa).
• Manufacturer states it prints with settings very similar to ABS.

Limitations

• Needs an enclosed printer per the TDS.
• Requires higher nozzle and bed temperatures (230–260 °C, 75–95 °C) than PLA or PETG.
• Cardboard spool: Bambu Lab strongly advises a spool adapter or adapter ring for cardboard spools in the AMS.

View on Amazon ↗ (opens Amazon in a new tab)Details checked 2026-10-06 against the manufacturer. Price and availability are on Amazon.

Skip it if you have nowhere well ventilated to print.

Overture ASA (Black, 1 kg)

Overture's product page lists "Enclosed Printer Required," a 240–270 °C nozzle, a 70–95 °C bed and drying at 75 °C for 7 hours. Overture says ASA "does produce some odor during printing," and advises good ventilation and considering air filtration. Overture doesn't publish spool material or dimensions, so check the spool against the AMS limits above before loading it.

OVERTURE

OVERTURE ASA (Black, 1.75 mm, 1 kg)

Best for

Outdoor, sun-exposed functional parts printed on an enclosed printer.

Skip this if

Your printer is open-frame, you want fast printing (the TDS lists 30–50 mm/s), or you need a published heat deflection temperature.

Specs, strengths, and limitations

Material

ASA

Diameter

1.75 mm

Net filament

1000 g (filament only, not packaged weight)

Format

other

Maker's nozzle range

240–270 °C

Strengths

• Manufacturer states it is formulated for maximum UV protection, for outdoor use.
• Manufacturer states each spool is dried for 24 hours and vacuum-sealed in a resealable foil bag.
• Manufacturer states a dimensional accuracy of ±0.02 mm.

Limitations

• Needs an enclosed printer: the product page lists 'Enclosed Printer Required'.
• Needs a 240–270 °C nozzle and a 70–95 °C bed per the product page; dry at 75 °C for 7 h when needed.
• Slow and fussy to print: Overture's TDS V5.1 lists 30–50 mm/s and PVA glue on the build surface, and it gives a Vicat softening point (106.2 °C) but no heat deflection temperature.

View on Amazon ↗ (opens Amazon in a new tab)Details checked 2026-10-06 against the manufacturer. Price and availability are on Amazon.

Skip it if you want a spool with published dimensions.

Bambu Lab ABS (Black 40101, 1 kg refill)

Bambu ABS is tuned for Bambu's own profiles. Its store page says "Enclosure Printers Required" and lists the AMS 2 Pro, AMS HT and AMS as compatible. The TDS (V3.0) lists a 240–270 °C nozzle, an 80–100 °C bed and a 45–60 °C chamber. An X1E can hold that chamber range with its heater, while an X1C relies on the bed. Bambu's store page warns that ABS "may release harmful gases, including styrene" at printing temperatures, and recommends a well-ventilated area. This is a refill with no spool, so you need an empty Bambu reusable spool to load it.

Bambu Lab

Bambu Lab Bambu ABS (Black (40101), 1.75 mm, 1 kg refill (no spool))

Best for

Bambu Lab enclosed-printer owners who want ABS with Bambu's tuned profiles and a reusable spool.

Skip this if

You don't have a reusable Bambu spool or an enclosed printer.

Specs, strengths, and limitations

Material

ABS

Diameter

1.75 mm

Net filament

1000 g (filament only, not packaged weight)

Format

refill

Maker's nozzle range

240–270 °C

Strengths

• Manufacturer states Bambu ABS is designed to reduce warping and cracking while keeping strong impact resistance.
• TDS lists print speeds under 300 mm/s and nozzle sizes from 0.2 to 0.8 mm.
• Manufacturer publishes a full TDS with drying, annealing, and mechanical data.

Limitations

• Bambu Lab's store page says enclosed printers are required and recommends a well-ventilated area or air filtration, warning that it may release styrene at printing temperatures.
• Refill only: it needs a reusable spool to load in an AMS or on a spool holder.
• TDS calls for glue on the build plate.

View on Amazon ↗ (opens Amazon in a new tab)Details checked 2026-10-06 against the manufacturer. Price and availability are on Amazon.

Skip it if you don't have a spare reusable spool, or nowhere well ventilated to print.

Polymaker PolyLite ABS (Black, 1 kg)

Polymaker says to print PolyLite ABS on an enclosed printer, and lists a 245–265 °C nozzle and a 90–100 °C bed. Its FAQ says bigger prints need an enclosed printer (about 40–50 °C), and models bigger than about 15–20 cm in any direction "will require an actively heated chamber (~70˚C+)." The X1E's heater reaches 60 °C, below that figure, and the X1C has no chamber heater. So keep very large ABS parts in mind on either printer. It's on a cardboard spool, so use a spool adapter in the AMS.

Polymaker

Polymaker PolyLite ABS (Black, 1.75 mm, 1 kg)

Best for

Heat-resistant functional parts, enclosures, and prototypes printed on an enclosed printer.

Skip this if

Your printer is open-frame or its bed can't reach 90 °C.

Specs, strengths, and limitations

Material

ABS

Diameter

1.75 mm

Net filament

1000 g (filament only, not packaged weight)

Format

cardboard spool

Maker's nozzle range

245–265 °C

Strengths

• Manufacturer states PolyLite ABS uses a bulk-polymerized ABS resin with significantly lower volatile content than traditional ABS, for minimal odor.
• TDS lists a heat deflection temperature of 98 °C at 1.8 MPa.
• Manufacturer publishes a full TDS with mechanical, thermal, and drying data.

Limitations

• TDS lists a closed chamber as 'Needed'. Polymaker's product page says a non-enclosed printer with a 90 °C bed and 260 °C nozzle can handle models smaller than fist size, larger prints need an enclosed printer (about 40–50 °C), and models over about 15–20 cm need a heated chamber (about 70 °C or more).
• Needs a 90–100 °C bed (TDS), so printers with low-temperature beds aren't suitable.
• Cardboard spool: Bambu Lab strongly advises a spool adapter or adapter ring for cardboard spools in the AMS.

View on Amazon ↗ (opens Amazon in a new tab)Details checked 2026-10-06 against the manufacturer. Price and availability are on Amazon.

Skip it if you plan ABS parts bigger than about 15 cm. ASA is the alternative for outdoor use.

Can the X1C and X1E print carbon fiber without an upgrade?

This is where the X1C and X1E differ from the P1 series. Both ship with a hardened steel nozzle and hardened steel extruder gears, so you can load these spools without changing parts. Bambu's filament guide says to always use a hardened steel nozzle for carbon- and glass-fiber filament, and never a 0.2 mm nozzle. It names a 0.6 mm hardened steel nozzle as the first choice for third-party fiber filament because it clogs less. It lists 0.4 mm, the size both printers ship with, as the second choice, at layer heights of 0.15–0.3 mm and about 100 mm/s at most. It also says the nozzle and extruder gears need more frequent maintenance.

Bambu's AMS notes say to keep third-party fiber-reinforced filament out of the AMS, so feed all four from the back spool holder. Our PLA-CF vs PETG-CF guide compares the first two materials below, and our abrasive filament nozzle guide and carbon fiber filament shortlist go further.

Polymaker PolyLite PLA-CF (Black, 1 kg)

Polymaker says PolyLite PLA-CF "can be printed using standard PLA settings," and lists "0.4mm+ hardened nozzle required," which the stock nozzle meets. Its specifications list a 190–230 °C nozzle and a 25–60 °C bed. Its print settings block gives 210–230 °C and 30–70 °C, so start in the overlap. It suits stiff, matte prototypes and fixtures. It still has PLA's heat limit, so the low-temperature advice above applies: door open above a 45 °C bed, and no chamber heating on an X1E.

Polymaker

Polymaker PolyLite PLA-CF (Black, 1.75 mm, 1 kg)

Best for

Stiff, matte-finish PLA parts and prototypes on a printer fitted with a hardened nozzle.

Skip this if

Your printer only has a brass nozzle, or the part will see heat.

Specs, strengths, and limitations

Material

PLA (carbon-fiber filled (8 wt% chopped carbon fiber))

Diameter

1.75 mm

Net filament

1000 g (filament only, not packaged weight)

Format

cardboard spool

Maker's nozzle range

190–230 °C

Nozzle

Abrasive: the maker recommends a wear-resistant nozzle

Strengths

• Manufacturer states 8% chopped carbon fiber gives exceptional rigidity and strength.
• Manufacturer states a matte black finish with virtually invisible layer lines and low shrinkage.
• Manufacturer states it prints with standard PLA settings; the TDS lists no enclosure needed.

Limitations

• Abrasive: Polymaker strongly recommends a hardened nozzle.
• Not suited to heat: the TDS lists a heat deflection temperature of 50 °C (1.8 MPa).
• Cardboard spool: Bambu Lab strongly advises a spool adapter or adapter ring for cardboard spools in the AMS.
• The Amazon listing's bullet points describe plain PolyLite PLA, though its title and model number (PA10001) are the carbon-fiber version. Check that the title says Carbon Fiber PLA before you buy.

View on Amazon ↗ (opens Amazon in a new tab)Details checked 2026-10-06 against the manufacturer. Price and availability are on Amazon.

Skip it if the part will see heat.

Polymaker Fiberon PETG-rCF08 (Black, 0.5 kg)

Fiberon PETG-rCF08 is a PETG with recycled carbon fiber, for stiffer functional parts than PLA-CF. Polymaker lists a 240–270 °C nozzle, a 60–70 °C bed, a room-temperature chamber and "0.4mm+ hardened nozzle required." It says brass nozzle life may be about 9 hours, which doesn't apply to the stock hardened nozzle. Polymaker's printing tips say "an enclosed printer is recommended," though the page's specification block lists an enclosure as "Not needed." It sells this in 0.5 kg and 3 kg spools, and says carbon-fiber filament is more brittle and needs a larger spool core. Dry it at 65 °C for 3 hours before use.

Polymaker

Polymaker Fiberon PETG-rCF08 (Black, 1.75 mm, 0.5 kg)

Best for

An easy first carbon-fiber PETG for matte functional parts and fixtures on a printer with a hardened nozzle.

Skip this if

You need parts that hold up above about 65 °C, or you want a 1 kg spool.

Specs, strengths, and limitations

Material

PETG (8% recycled carbon-fiber filled)

Diameter

1.75 mm

Net filament

500 g (filament only, not packaged weight)

Format

other

Maker's nozzle range

240–270 °C

Nozzle

Abrasive: the maker recommends a wear-resistant nozzle

Strengths

• Manufacturer states 8% recycled carbon fiber for added stiffness over standard PETG.
• Manufacturer states a matte finish that hides layer lines and PETG-level low warping.
• Prints at ordinary PETG temperatures (240–270 °C nozzle, 60–70 °C bed) per the TDS, with only a short 65 °C / 3 h dry.

Limitations

• Abrasive: Polymaker requires a hardened (or ruby) nozzle of 0.4 mm or larger; brass lasts about 9 h.
• Modest heat resistance: TDS heat deflection temperature is 65.7 °C at 1.8 MPa.
• Only sold in 0.5 kg and 3 kg spools, and Polymaker's enclosure guidance is inconsistent between page sections.

View on Amazon ↗ (opens Amazon in a new tab)Details checked 2026-10-07 against the manufacturer. Price and availability are on Amazon.

Skip it if you want a 1 kg spool.

ELEGOO ASA-CF (Carbon Fiber Black, 1 kg)

ASA-CF combines ASA's weather resistance with carbon-fiber stiffness, which suits these enclosed, hardened-nozzle printers. ELEGOO's specification table lists a "Hardened Steel Nozzle, ≥ 0.4 mm," a 250–280 °C nozzle, a 90–100 °C bed, a 45–60 °C chamber, glue on the build plate, and enclosed printing as "Required." An X1E can set that chamber temperature directly. ELEGOO lists drying as "Required" at 80 ± 5 °C for 8 hours, while a note on the same page says 85 °C for 8 hours. It also says to print and store at 20% RH or less, sealed with desiccant. ELEGOO says ASA-CF "may produce a more noticeable odor" than standard filaments, so use a well-ventilated area.

ELEGOO

ELEGOO ASA-CF (Carbon Fiber Black, 1.75 mm, 1 kg)

Best for

Stiff outdoor and automotive parts printed on an enclosed printer with a hardened steel nozzle.

Skip this if

Your printer is open-frame or brass-nozzled, or it sits in an unventilated room.

Specs, strengths, and limitations

Material

ASA (carbon-fiber reinforced)

Diameter

1.75 mm

Net filament

1000 g (filament only, not packaged weight)

Format

other

Maker's nozzle range

250–280 °C

Nozzle

Abrasive: the maker recommends a wear-resistant nozzle

Strengths

• Manufacturer states ASA's UV and weather resistance for outdoor parts.
• Product page lists a heat deflection temperature of 108 °C (0.45 MPa).
• Manufacturer states lower warping and better dimensional control than standard ASA for large prints.

Limitations

• Abrasive: ELEGOO recommends a hardened steel nozzle of 0.4 mm or larger.
• Needs an enclosed printer (45–60 °C chamber), a 90–100 °C bed with glue, and ventilation for odor.
• ELEGOO gives two drying temperatures (80 °C in the table, 85 °C in the note), and no TDS PDF is published.

View on Amazon ↗ (opens Amazon in a new tab)Details checked 2026-10-07 against the manufacturer. Price and availability are on Amazon.

Skip it if you can't dry filament before printing, or nowhere well ventilated to print.

Polymaker Fiberon PA6-CF20 (Black, 1 kg)

Fiberon PA6-CF20 is a carbon-fiber nylon for stiff, heat-resistant jigs, fixtures and tooling. Polymaker lists a 280–300 °C nozzle and calls for an "All-metal hotend 280˚C+" and a hardened nozzle. That fits both printers, though 300 °C is the X1C's maximum. Polymaker lists a 40–50 °C bed and a room-temperature chamber. Bambu's filament guide recommends enclosed printers for PA-CF and lists drying as "Required."

There's one X1E conflict to know about. Bambu's chamber guide sets PA6-CF and other high-temperature filaments to a 60 °C chamber by default. Polymaker says its Warp-Free technology needs "the build plate and the ambient air temperatures" both below 50 °C, and its printing tips say "an actively heated chamber is not required." Follow Polymaker for this spool and lower or turn off the X1E's chamber setting. Polymaker also says to dry it at 100 °C for 10 hours, print and store below 20% RH, and anneal at 100 °C for 16 hours when you need the data-sheet properties. Polymaker's own store showed the 1 kg size as sold out when we checked.

Polymaker

Polymaker Fiberon PA6-CF20 (Black, 1.75 mm, 1 kg)

Best for

Stiff, heat-resistant jigs, fixtures and tooling on a printer with a 300 °C hardened hotend and a dry box.

Skip this if

Your hotend tops out below 280 °C, you can't anneal parts, or you can't keep filament below 20% RH.

Specs, strengths, and limitations

Material

PA (PA6, 20% carbon-fiber filled)

Diameter

1.75 mm

Net filament

1000 g (filament only, not packaged weight)

Format

other

Maker's nozzle range

280–300 °C

Nozzle

Abrasive: the maker recommends a wear-resistant nozzle

Strengths

• TDS lists 109.3 MPa X-Y tensile strength and 8636 MPa X-Y Young's modulus (dry, annealed).
• TDS lists a heat deflection temperature of 173 °C at 1.8 MPa.
• Manufacturer states minimal warping and chemical resistance; the TDS calls for a room-temperature chamber, not a heated one.

Limitations

• Abrasive: Polymaker requires a hardened (or ruby) nozzle of 0.4 mm or larger; brass lasts about 9 h.
• Needs a 280–300 °C all-metal hotend, plus annealing at 100 °C for 16 h for the stated properties.
• PA6 is moisture-sensitive: TDS wet-state tensile strength drops to 54.7 MPa, and it must be dried at 100 °C for 10 h and kept below 20% RH.

View on Amazon ↗ (opens Amazon in a new tab)Details checked 2026-10-07 against the manufacturer. Price and availability are on Amazon.

Skip it if you can't dry filament to below 20% RH, or don't want to anneal parts.

Checklist before you buy for an X1C or X1E

• Material. PLA, PETG, TPU, ASA, ABS and carbon-fiber filament all suit both printers.
• Temperatures. The X1C hotend tops out at 300 °C and the X1E at 320 °C. The bed reaches 110 °C at 220 V and 120 °C at 110 V. Check the spool's published ranges.
• Chamber. The X1E heats its chamber to 60 °C, and the X1C doesn't heat its chamber at all. Turn X1E chamber heating off for PLA, PETG and TPU, and check the spool maker's chamber advice for nylon.
• Spool for the AMS. Width 50–68 mm and diameter 197–202 mm. Bambu's own spools are 200 × 67 mm. Use an adapter for cardboard spools.
• TPU. Only TPU for AMS is sold for the AMS. Feed softer TPU from the back spool holder.
• Hard particles. The stock hardened steel nozzle handles carbon-fiber filament, but third-party fiber filament stays out of the AMS.
• Enclosure heat. Open the door or remove the top glass for PLA and TPU when the bed is above 45 °C, and for PETG when it's above 60 °C.

Drying, storage and safety

TPU and nylon are the most moisture-sensitive materials here. Bambu's filament guide lists drying as "Required" for TPU, PETG HF and PA-CF, and "Recommended" for PLA, PLA-CF, PETG, ABS and ASA. Use the setting for your exact spool, and check the spool's own temperature rating before you dry it on the spool. Our filament dryer vs dry box guide and filament storage guide cover the options.

How this page was checked

This is a research-based page. We have not printed these spools on an X1C or X1E for it, so it contains no test results or scores. The printer limits come from Bambu Lab's X1 Series page, X1-Carbon quick start guide, X1E page and technical specification, X1 and X1E FAQs, X1E chamber guide, X1 loading guide, nozzle page, AMS notes and filament guide. The spool and AMS statements come from each filament maker's own pages, listed in the sources section. All were retrieved on 2026-10-07. Makers update their pages, so check the current version before relying on a number. Read more in our editorial standards and affiliate disclosure.

PLA: what to check before you buy a spool ↗