Conch Hotend M4 0.4 mm for Bambu Lab A1/A1 mini

A durable and efficient hotend designed specifically for the Bambu Lab A1 and A1 mini. Thanks to the removable M4 nozzle with EndCoat (HV3300) coating, you get long service life and quick nozzle diameter changes as needed. The maximum flow reaches up to 30 mm³/s, ensuring stable extrusion even at higher print speeds. The hotend is built with a titanium heatbreak and a copper-plated heater block for better thermal conduction and longevity. Supplied without heater cartridge and thermistor.

Main advantages

• Replaceable EndCoat 0.4 mm nozzle with HV3300 surface – up to 2.5× longer lifespan compared to hardened steel.
• Flow up to 30 mm³/s for fast and reliable printing.
• Titanium heatbreak and copper-plated block for stable thermal management.
• Kinematic mount with high rigidity to reduce risk of impact damage and enable easy maintenance.
• Compatible with A1 / A1 mini and a wide range of materials including abrasives (CF/GF etc.).

Technical parameters

Specifications per Phaetus/3DJake product sheet for the A1/A1 mini variant.

Installation and tips

• After changing the nozzle, perform a hot-tightening to prevent material leakage.
• When printing abrasive materials (e.g., PA-CF), take advantage of the higher durability of the EndCoat coating – less frequent nozzle replacement.

Version note

Phaetus also offers the Conch Hotend Plus with an integrated SiC nozzle; the M4 variant listed here uses removable nozzles (0.2/0.4/0.6/0.8 mm), easily interchangeable as needed.

Key features:

• Original solution for Bambu Lab A1/A1 mini with quick nozzle swaps
• Longer service life thanks to EndCoat (HV3300) surface – ideal for abrasive materials
• Stable extrusion at higher speeds (up to 30 mm³/s)
• Titanium heatbreak and copper block for efficient heat transfer
• Kinematic mounting reduces maintenance costs and risk of damage
• Supplied without heater cartridge and thermistor – use the existing ones from the printer