Neptune 4 / Pro 3x 5015 fan Printhead - Threaded Inserts + More

Features:

• M3 threaded Inserts (ADXL spacing 15mm)
• Improved the heatbreak duct curvature for better airflow.
• Improved heat-break fan fitment + fan alignment (new).
• Improved LED PCB clearance/fitment 
• Reinforced mounting lugs
• Hex Key access channels (shroud can be unscrewed without removing the two side fans)
• Improved Nozzle duct overhangs
• Only 45g heavier than stock (even less with aluminium bolts)

Fixings Required (Recommend Aluminium bolts for weight saving):

• 11x M3 Brass Threaded Inserts (M3 4.3X3-4mm + Soldering Iron)
• 6x M3x20 machine screws (for mounting the 5015 fans)
• 4x M3x5 machine screws, x6/x8 will also work (for mounting the LED PCB & ADXL mount)

Required but Included with Elegoo Printhead: 

• 4x M2 screws for mounting the extruder to the print (2x on each side)
• 1x M3 Bed Probe Screw
• 2x M3x8 external shroud mounting screws (1x each side)
• 4x Rear printhead mounting screws. (2x high long, 2x low short)

Printed with:

• 2 walls
• 10% cubic infill
• PLA
• OrcaSlicer Manual Tree Support as instructed by OrzOrzOrz's original.
   

Heat-break Fan Settings (Reduced PWM noise);

fan_speed: 0.40

cycle_time: 0.00004

#(cycle time = 25000Hz above human hearing range)

Wiring Notes:

Like OrzOrzOrz, I had to reverse the polarity for the left-most fan header for the heat-break fan. The PCB denotes a (+) where it is actually (-) here. 

My Hotend PCB has model number EL-A-V2.1.1.100, this may have been fixed in later revisions.