A1 High Flow Hotend – Phaetus Conch for Bambu Lab A1 Mini & A2L
A1 High Flow Hotend – Phaetus Conch for Bambu Lab A1 Mini & A2L
Wear Resistance for Abrasive Filaments
Choose a wear-resistant Phaetus hotend option for projects using abrasive filament. M4 combines an EndCoat-coated nozzle with a replaceable design, while Plus uses an integrated silicon carbide nozzle.
Two Distinct Nozzle Designs
The M4 version lets you replace its nozzle separately, while the Plus SiC version uses an integrated nozzle. Select the design that matches your preferred maintenance approach and available diameter.
10 in stock
The A1 high flow hotend from Phaetus is a third-party Conch upgraded hotend with nozzle for Bambu Lab A1, A1 Mini and A2L printers. Designed for users who print abrasive materials as well as everyday filaments, it offers a choice of wear-resistant nozzle constructions and is intended to fit the printer’s hotend mounting system. Choose the version and nozzle diameter that suit your material and maintenance preferences.
The M4 EndCoat version has a separately replaceable nozzle, allowing the nozzle to be changed without replacing the whole hotend. The Plus SiC version has an integrated silicon carbide nozzle; its nozzle is not separately replaceable. Both are high-flow options, but the appropriate print settings depend on the filament, nozzle size and printer. The two constructions give frequent composite-filament users different ways to balance nozzle selection and maintenance.
M4 is listed in 0.2, 0.4, 0.6 and 0.8 mm sizes; Plus SiC is listed in 0.4 and 0.6 mm. Smaller openings suit fine details, while larger openings can be more appropriate for filled materials and wider extrusion paths. Check the selected filament manufacturer’s nozzle recommendations, especially for abrasive or particle-filled materials. The package contents differ by variant, so review the included parts and the installation guide before fitting the hotend.
ETA:
- 90-Day Warranty
- 30-Day Return
- 7-Day Delivery

Conch Hotend for A1/A1 Mini Overview
A maintenance choice for frequent abrasive-filament users
For users who regularly print abrasive materials and want a choice in how they maintain a hotend, the Phaetus Conch provides two different constructions. The M4 version allows a worn nozzle to be replaced separately, while the Plus SiC version uses an integrated nozzle. Bambu Lab also offers original A1-series hotends in stainless and hardened steel. Those who prefer original parts or mostly print standard materials may find the original options a simpler choice.
Product Specification
• Product Type: Third-party hotend with nozzle
• Manufacturer: Phaetus
• Compatible Printers: Bambu Lab A1 / A1 Mini / A2L
• Nozzle Diameter — M4 EndCoat: 0.2 / 0.4 / 0.6 / 0.8 mm (0.0079 / 0.0157 / 0.0236 / 0.0315 in)
• Nozzle Diameter — Plus SiC: 0.4 / 0.6 mm (0.0157 / 0.0236 in)
• Nozzle Material: M4 EndCoat coated nozzle / Plus integrated silicon carbide nozzle
• Flow Options: M4 EndCoat high flow / Plus SiC high flow
• Nozzle Replaceability: M4 — separately replaceable; Plus SiC — integrated, not separately replaceable
Package Includes
Conch M4 EndCoat:
1 × Phaetus Conch M4 hotend with pre-installed nozzle
1 × Silicone hotend sock
1 × Instruction / tip card
1 × H7 open-end wrench
1 × H3 Allen wrench
Conch Plus SiC:
1 × Phaetus Conch Plus hotend with integrated nozzle
1 × Silicone hotend sock
1 × Instruction / tip card
The H7 and H3 tools are listed for M4 only. Confirm the selected SKU’s contents before ordering.
Requirements & Installation Notes
- Compatible with Bambu Lab A1 / A1 Mini / A2L; choose the correct variant and nozzle size.
- Turn off the printer and allow the hotend to cool before handling.
- Installation uses the printer’s hotend interface; follow the model-specific guidance and check fit before use.
- M4 nozzle replacement requires attention to the supplied tools and Phaetus instructions; Plus SiC is integrated.
- Follow the lower applicable temperature limit for the printer and the selected hotend.
View the Phaetus Conch A1 Series Hotend Installation Guide: https://www.call-3d.com/blogs/upgrades/phaetus-conch-hotend-a1-series-hotend-installation-guide
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Frequently Asked Questions About Conch Hotend for A1/A1 Mini
Is the Phaetus Conch hotend compatible with A1, A1 Mini and A2L?
Yes. This Phaetus Conch hotend is compatible with Bambu Lab A1, A1 Mini and A2L. Choose the correct variant and nozzle diameter before ordering.
Can I replace the nozzle separately?
The M4 EndCoat version has a separately replaceable nozzle. The Plus SiC version has an integrated nozzle and is replaced as a complete hotend.
Which nozzle sizes are available for each version?
The M4 EndCoat version is listed in 0.2, 0.4, 0.6 and 0.8 mm. The Plus SiC version is listed in 0.4 and 0.6 mm . Check the selected option before ordering.
Can I print carbon-fiber-filled filament with this hotend?
Both versions use wear-resistant nozzle constructions intended for abrasive materials. Check your filament manufacturer’s nozzle-diameter recommendations; particle-filled materials can clog small openings, particularly 0.2 mm.
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The product feels incredibly well-made compared to the original. I bought the version with the interchangeable nozzle and can’t wait to test it with carbon fiber materials.
Finally released! When the P series first came out, I was dying to get one. Can't wait to see how the printing turns out!
I've already swapped out the nozzle on my Bambu Lab for this one, and it feels like this nozzle can run fiber filaments daily until the machine kicks the bucket.
A1 High Flow Hotend – Phaetus Conch for Bambu Lab A1 Mini & A2L