E3D High Flow ObXidian Hotend — for the Bambu Lab X1 Carbon
The X1 Carbon is already a quick machine. What usually stops it going quicker isn't the motion system — it's how much molten plastic the hotend can physically deliver per second. This is E3D's answer to that, developed with Bambu Lab: a redesigned high-flow melt zone that pushes roughly 60% more volumetric flow than the stock X1C hotend, tipped with an ObXidian hardened nozzle and an E3DLC coating that resists both abrasion and sticking.
It's a genuine drop-in. The form factor matches the original, so the toolhead mount and part-cooling duct are untouched, and no PID tuning is required after the swap. Pick your nozzle size and how much assembly you want to do, and the rest is unchanged.
~60% more flow ObXidian hardened tip 300 °C max CF & GF ready No PID tuning 1.75 mm
What the extra flow actually buys you
Volumetric flow is the ceiling your slicer quietly enforces. Push the speed slider past what the hotend can melt and you get under-extrusion, weak layer bonding and rough top surfaces — so Bambu Studio throttles the toolhead back instead. Raise the ceiling and those speed limits lift with it: infill passes, long perimeters and thick-walled functional parts all finish sooner, and solid infill stops being the slowest part of the job.
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Production and small-batch work — brackets, jigs, fixtures, printed tooling and enclosures, where throughput is the whole point.
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Engineering materials — ASA, PC and PETG all have published flow figures here, with 300 °C of headroom.
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Carbon-fibre and glass-filled filaments — the ObXidian hardened tip is designed to outlast standard hardened steel on abrasive blends.
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Classrooms and makerspaces — more jobs through one printer per day, with a spare hotend path that doesn't require a technician.
Which configuration is right for you?
There are two decisions: how much assembly you want to do (Complete Hotend vs metal-only Hotend) and how you balance speed against detail (0.6 mm vs 0.4 mm). Flow performance is identical between the Complete and metal-only versions at the same nozzle size — the difference is purely what's in the box.
| Choice |
Pick this if… |
What you do at install |
| Complete Hotend |
You want the shortest downtime, the printer is shared or earning, or you'd rather keep your old hotend whole as a spare. |
Two screws, two connectors. Fan, heater and thermistor arrive pre-fitted — no thermal grease, no PID tuning. |
| Hotend (metal only) |
You're comfortable working inside a toolhead and want the best value per upgrade — your current heater, sensor and fan are fine. |
Allow 20–30 minutes to transfer the heater cartridge, temperature sensor and cooling fan, and re-apply the supplied thermal grease. |
| 0.4 mm nozzle |
You want faster prints without changing how your existing profiles look — fine detail, small text, crisp features. |
Drop-in for the X1C's standard size; existing projects keep their wall and detail behaviour. |
| 0.6 mm nozzle |
Throughput and part strength matter more than fine detail — functional parts, big enclosures, composite filaments. |
Re-slice with a wider extrusion width to collect the full benefit; expect noticeably shorter print times. |
Still torn on nozzle size? The 0.4 mm is the safe default and the one most X1C owners should pick first. The 0.6 mm is the upgrade you add once you know your bottleneck is throughput — plenty of workshops keep one of each and swap by job.
What's in the box
Complete Hotend (0.4 mm or 0.6 mm)
- 1× assembled High Flow ObXidian hotend with your chosen nozzle
- Hotend cooling fan, heating element and temperature sensor — pre-fitted
- Silicone sock and heater retaining clip, fitted
- 2× mounting bolts
Hotend, metal only (0.4 mm or 0.6 mm)
- 1× High Flow ObXidian hotend with your chosen nozzle
- Thermal grease, silicone sock, heater retaining spring
- 2× bolts and assembly instructions
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Not included: heater cartridge, temperature sensor and hotend cooling fan — transfer these from your existing hotend
Full specifications
| Compatible printer |
Bambu Lab X1 / X1 Carbon (X1C) — this listing is the X1C version; not compatible with the X1E |
| Nozzle sizes available |
0.4 mm · 0.6 mm |
| Nozzle material & coating |
ObXidian hardened tip with E3DLC abrasion-resistant, non-stick coating |
| Flow improvement |
Approx. +60% volumetric flow vs the stock Bambu Lab hotend |
| Flow rates — 0.4 mm |
PLA 220 °C — 29 mm³/s · PETG 240 °C — 32 mm³/s · ASA 260 °C — 35 mm³/s · PC 275 °C — 33 mm³/s |
| Flow rates — 0.6 mm |
PLA 220 °C — 36 mm³/s · PETG 240 °C — 42 mm³/s · ASA 260 °C — 34 mm³/s · PC |
| Max printing temperature |
300 °C |
| Max ambient (chamber) temperature |
60 °C |
| Filament diameter |
1.75 mm |
| Mass |
30.5 g assembled · 17.84 g metal only |
| PID tuning after install |
Not required |
| Part number example |
BAMBU-HF-OBX-X1-AS-0400-SPK (X1 Complete Hotend, 0.4 mm) |
| Brand |
E3D, in collaboration with Bambu Lab |
Good to know before you order
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X1C only. This listing is the X1 Carbon version. Running a P1P or P1S? Choose the P1 Series listing instead — and note that the X1E is not supported by this hotend.
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Abrasive filaments still wear nozzles. ObXidian outlasts standard hardened steel, but heavily filled composites such as carbon-fibre polyamide will shorten its life — that's physics, not a defect.
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Chamber limit. Rated for a 60 °C maximum ambient temperature, comfortably within the X1C's enclosed envelope.
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No power adapter needed. The hotend runs from the printer's own toolhead loom, so there's no AU plug pack or voltage question to worry about.
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Re-slice to see the gains. Update your filament profile's maximum volumetric speed in Bambu Studio — the hardware can't help if the slicer is still capped at stock numbers.
Buying from NE3D Printing
- 🇦🇺 Ships from Australia — tracked domestic delivery Australia-wide, no international customs wait.
- All prices shown include GST, and a tax invoice is issued with every order.
- Genuine Bambu Lab × E3D stock — no grey imports.
- Australian-based support for hobbyists, schools, makerspaces and small businesses, in your timezone.
Complete Hotend — 0.4 mm
The no-fuss route to high flow on your Bambu Lab X1 Carbon. This variant arrives as a single finished assembly: the E3D High Flow ObXidian hotend with its 0.4 mm hardened tip, the X1-series hotend cooling fan, the heating element and the temperature sensor all fitted and wired, with the silicone sock and retaining clip already in place. Two screws, two connectors, done — no thermal grease to apply, no components to salvage from your old hotend, and no PID tuning afterwards.
The 0.4 mm is the size the X1C ships with and the size every stock Bambu Studio profile is built around, so your existing projects keep their wall counts, overhang behaviour and small-text legibility — they just finish sooner. Published flow is 29 mm³/s with PLA at 220 °C, 32 mm³/s with PETG at 240 °C, 35 mm³/s with ASA at 260 °C and 33 mm³/s with PC at 275 °C, roughly 60% above stock. Remember to lift the maximum volumetric speed in your filament profile or the slicer will keep enforcing the old ceiling.
Pre-assembled 0.4 mm ObXidian 29 mm³/s PLA Two-screw swap
What's included
- 1× assembled High Flow ObXidian Complete Hotend, 0.4 mm
- Hotend cooling fan, heating element and temperature sensor — pre-fitted
- Silicone sock and heater retaining clip, fitted
- 2× mounting bolts
Key specifications
| Nozzle |
0.4 mm ObXidian hardened tip, E3DLC coated |
| Volumetric flow |
PLA 29 · PETG 32 · ASA 35 · PC 33 mm³/s |
| Max printing temperature |
300 °C |
| Max ambient temperature |
60 °C |
| Filament diameter |
1.75 mm |
| Assembled mass |
30.5 g |
| Compatibility |
Bambu Lab X1 / X1 Carbon only — not the X1E |
| Part number |
BAMBU-HF-OBX-X1-AS-0400-SPK |
Buying from NE3D Printing
- 🇦🇺 Ships from Australia — tracked domestic delivery, no international customs wait.
- All prices shown include GST, and a tax invoice is issued with every order.
- Genuine Bambu Lab × E3D stock, backed by Australian-based support in your timezone.
- No AU plug pack required — the hotend runs off the printer's own toolhead loom.
Complete Hotend — 0.6 mm
This is the configuration for X1 Carbon owners whose bottleneck is throughput. The 0.6 mm ObXidian nozzle pairs a wider orifice with E3D's high-flow melt zone to deliver the strongest figures in the range: around 36 mm³/s with PLA at 220 °C and 42 mm³/s with PETG at 240 °C. Paired with a wider extrusion width, brackets, jigs, fixtures, printed tooling and large enclosures finish in a fraction of the time they used to take — and fewer, fatter perimeters make for tougher functional parts.
It ships as one finished assembly, with the hotend cooling fan, heating element, temperature sensor, silicone sock and retaining clip all fitted and wired. Two screws and two connectors and the printer is back in service, with no thermal grease step and no PID tuning. The honest trade-off: a 0.6 mm nozzle gives up fine detail, so small lettering and delicate miniature work still belong to the 0.4 mm. Plenty of workshops keep one of each and swap by job.
Pre-assembled 0.6 mm ObXidian 42 mm³/s PETG CF & GF friendly
What's included
- 1× assembled High Flow ObXidian Complete Hotend, 0.6 mm
- Hotend cooling fan, heating element and temperature sensor — pre-fitted
- Silicone sock and heater retaining clip, fitted
- 2× mounting bolts
Key specifications
| Nozzle |
0.6 mm ObXidian hardened tip, E3DLC coated |
| Volumetric flow |
PLA 36 · PETG 42 · ASA 34  |
| Max printing temperature |
300 °C |
| Max ambient temperature |
60 °C |
| Filament diameter |
1.75 mm |
| Assembled mass |
30.5 g |
| Compatibility |
Bambu Lab X1 / X1 Carbon only — not the X1E |
| PID tuning after install |
Not required |
Buying from NE3D Printing
- 🇦🇺 Ships from Australia — tracked domestic delivery, no international customs wait.
- All prices shown include GST, and a tax invoice is issued with every order.
- Genuine Bambu Lab × E3D stock, backed by Australian-based support in your timezone.
- No AU plug pack required — the hotend runs off the printer's own toolhead loom.
Hotend (metal only) — 0.4 mm
Same hotend, same ObXidian nozzle, same roughly 60% flow gain over stock — without paying for electrical parts you already own. This is the metal-only kit: the High Flow ObXidian hotend body with its 0.4 mm hardened tip, supplied with thermal grease, a silicone sock, the heater retaining spring, two bolts and instructions. You transfer the heater cartridge, temperature sensor and hotend cooling fan from the hotend currently fitted to your X1 Carbon, re-apply the grease, and you're printing.
Performance is identical to the Complete version — 29 mm³/s with PLA at 220 °C, 32 mm³/s with PETG at 240 °C, 35 mm³/s with ASA, 33 mm³/s with PC — because the part doing the work is exactly the same. The only difference is where your time goes. Allow 20–30 minutes on a clear bench with the printer cold, keep track of how the thermistor lead routes, and be generous but tidy with the thermal grease: that interface is what keeps your temperature readings honest. If the printer can't spare the downtime, take the Complete Hotend instead.
Metal only 0.4 mm ObXidian 29 mm³/s PLA Best value
What's included — and what isn't
- 1× High Flow ObXidian hotend with 0.4 mm nozzle
- Thermal grease, silicone sock, heater retaining spring
- 2× bolts and assembly instructions
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Not included: heater cartridge, temperature sensor and hotend cooling fan — transfer these from your existing hotend
Key specifications
| Nozzle |
0.4 mm ObXidian hardened tip, E3DLC coated |
| Volumetric flow |
PLA 29 · PETG 32 · ASA 35 · PC 33 mm³/s |
| Max printing temperature |
300 °C |
| Max ambient temperature |
60 °C |
| Filament diameter |
1.75 mm |
| Metal-only mass |
17.84 g |
| Compatibility |
Bambu Lab X1 / X1 Carbon — the metal-only part also fits P1P and P1S toolheads |
| Install time |
Approx. 20–30 minutes, including component transfer |
Buying from NE3D Printing
- 🇦🇺 Ships from Australia — tracked domestic delivery, no international customs wait.
- All prices shown include GST, and a tax invoice is issued with every order.
- Genuine Bambu Lab × E3D stock, backed by Australian-based support in your timezone.
- No AU plug pack required — the hotend runs off the printer's own toolhead loom.
Hotend (metal only) — 0.6 mm
The fastest nozzle in the range, supplied as the metal-only kit for makers who are comfortable inside a toolhead. You get the E3D High Flow ObXidian hotend with its 0.6 mm hardened tip, plus thermal grease, a silicone sock, the heater retaining spring, two bolts and instructions. The heater cartridge, temperature sensor and hotend cooling fan come across from the hotend currently fitted to your X1 Carbon.
Flow is the reason to pick it: roughly 36 mm³/s with PLA at 220 °C and 42 mm³/s with PETG at 240 °C. Paired with a wider extrusion width, long functional prints — brackets, jigs, fixtures, printed tooling, enclosures — move from overnight jobs to within-a-shift jobs, and fewer, fatter perimeters make stronger parts. The wider bore is also the friendlier of the two sizes for carbon-fibre and glass-filled filaments, which the ObXidian tip and its E3DLC coating are built to handle. Fine text and delicate small features are still the 0.4 mm's territory.
Metal only 0.6 mm ObXidian 42 mm³/s PETG Great second nozzle
What's included — and what isn't
- 1× High Flow ObXidian hotend with 0.6 mm nozzle
- Thermal grease, silicone sock, heater retaining spring
- 2× bolts and assembly instructions
-
Not included: heater cartridge, temperature sensor and hotend cooling fan — transfer these from your existing hotend
Key specifications
| Nozzle |
0.6 mm ObXidian hardened tip, E3DLC coated |
| Volumetric flow |
PLA 36 · PETG 42 · ASA 34  |
| Max printing temperature |
300 °C |
| Max ambient temperature |
60 °C |
| Filament diameter |
1.75 mm |
| Metal-only mass |
17.84 g |
| Compatibility |
Bambu Lab X1 / X1 Carbon — the metal-only part also fits P1P and P1S toolheads |
| Install time |
Approx. 20–30 minutes, including component transfer |
Buying from NE3D Printing
- 🇦🇺 Ships from Australia — tracked domestic delivery, no international customs wait.
- All prices shown include GST, and a tax invoice is issued with every order.
- Genuine Bambu Lab × E3D stock, backed by Australian-based support in your timezone.
- No AU plug pack required — the hotend runs off the printer's own toolhead loom.
