Extruder Coling Fan for Qidi Q2

Unfortunately, the extruder motor cooling is insufficient: the motor heats the plate, the plate heats the extruder gears ... the gears melt PLA during a long print. You can buy "Polar Cooler" or try this :)

I've performed long prints (6+ hours PETG+PLA support; 65% filter fan) with this cooler and closed door without any clogs. Please note, I've tuned switch filament macro, because it may it still may clog with defaults. But this is out of scope here, sorry.

Fortunately, the extruder board has free/unused 2 pin connector, so you just need

• connect the 4010 fan (see photo)
• check that no conflict with the front panel (!)
• modify printed.cfg (see below)

I'm using the following configuration (new fan used the same as extruder fan):

[heater_fan hotend_gears_fan]
pin:THR:PB10 # FAN2 pins
max_power: 1.0
shutdown_speed:0
cycle_time: 0.010
hardware_pwm: False
kick_start_time: 0.100
heater: extruder
heater_temp: 50.0
fan_speed: 0.9
off_below: 0