5015 heatbreak fan adapter for Neptune 3 Pro/Plus/Max

Update 1.1 – print optimization and minor fixes

You'll need 2xM2 6mm bolts for duct and 1xM2 16mm bolt for fan mount.

Designed for Sunon fans, Younuon fans also fit fine. Fan should be installed at a 10° angle (see last picture) and should make a clicking sound when installed.

You can set fan_speed at 0.6 if you installed larger mcu fan (mcu fan uses the same pin, so it'll slow down too). Your config should look like this:

[heater_fan hotend_fan]
pin: PB0
heater: extruder
heater_temp: 50.0
cycle_time: 0.010
kick_start_time: 0.100
fan_speed: 0.6
hardware_pwm: False
off_below: 0.0