If you want to print carbon fiber, glass fiber or glow-in-the-dark filament on a Bambu Lab printer, you need a hardened steel nozzle. This short guide explains why, and which hardened steel hotend fits your printer. We sell these parts from our shop in Brooklyn, NY, and ship them free anywhere in the US.
Why hardened steel?
Filaments like PLA-CF, PETG-CF, PA-CF, glass-fiber blends and glow-in-the-dark PLA have tiny hard particles mixed in. Those particles act like sandpaper. They wear a soft brass or stainless steel nozzle wider over time, and a worn nozzle gives thin walls, stringing and weak parts.
A hardened steel nozzle is much harder, so it lasts far longer with these filaments. It still prints normal PLA, PETG, ABS, ASA and TPU just fine.
Most Bambu Lab printers ship with a stainless steel nozzle. The X1 Carbon ships with a hardened steel nozzle, but a spare hotend is still handy when a clog stops your print day.
Which hotend fits my printer?
Bambu Lab uses a few different hotend designs, so match the part to your model:
- A1 and A1 mini: Hardened steel hotend for A1 / A1 mini. It uses the A1 quick-swap clip, so you can change it without tools. Want a spare too? Get the A1 2-pack.
- P1P, P1S, X1 Carbon (X1C) and X1E: Hardened steel hotend for P1 / X1 series. It is a complete drop-in assembly (heatsink, heat break, heater block and 0.4 mm nozzle) with a silicone sock fitted.
- P2S: P2S hardened steel hotend 2-pack: one to run and one spare.
Not sure which one you have? The model name is printed on the front of your printer. You can also email us your model at info@3dnearyou.com and we will confirm the fit before you buy.
Tips for printing with hardened steel
- Tell your slicer. In Bambu Studio, set the nozzle type to hardened steel so it allows abrasive filaments.
- Add a little heat if needed. Hardened steel moves heat a bit slower than brass. If you see under-extrusion at high speed, raise the temperature 5 to 10 °C or lower the max flow.
- Dry your filament. Carbon fiber and nylon blends soak up moisture. Keep spools in vacuum storage bags between prints.
- Keep spares. A torn silicone sock lets plastic stick to the heater block. A pack of silicone hotend socks is cheap insurance, and a heater and thermistor kit fixes most heating errors.
How to swap a hotend (the short version)
- Heat the nozzle and unload the filament.
- Turn the printer off and let the hotend cool down completely.
- Unplug the hotend cable, release the clip or screws, and lift the old hotend out.
- Seat the new hotend, lock it in, and plug the cable back in.
- Turn the printer on, load filament and run a small test print.
Always follow Bambu Lab's own guide for your exact model.
Where to buy in Brooklyn and NYC
3D Near You is a 3D printer supplies and accessories shop based in Brooklyn, NY. All our hardened steel hotends ship free in the US. Browse more 3D printer accessories or ask us anything at info@3dnearyou.com.
Bambu Lab and its model names are trademarks of their owners. Our parts are compatible replacements, not made by or affiliated with Bambu Lab.