Bambu Lab MC Control Board Fan Noctua Upgrade

Bambu Lab MC Board Fan Noctua Upgrade

Designed to improve cooling to the control board heatsink using: Noctua NF-A4x10 5V PWM , NF-A4x20 5V PWM or the original Bambu MC fan.

Files

Noctua Fan STL

1. Noctua Fan 35x18
2. Noctua Fan  39x22
3. Noctua Fan 38x20
4. Noctua Fan 40x40x20 38x20
5. Noctua Fan 40x40x20 35x18

Bambu Fan STL

1. Bambu Fan 38x20
2. Bambu Fan 35x18
3. Bambu Fan 39x22

Print Files

1. Bambu Fan Print Files
2. Noctua Fan Print Files

Fans

• Noctua NF-A4x10 5V PWM
  • https://a.co/d/5Trh12O 
• Noctua NF-A4x20 5V PWM
  • https://a.co/d/8Tra4lA 
• Bambu Control Board Fan
  • https://store.bambulab.com/products/control-board-fan 

NF-A4x10 is what I’m using , it's quiet and has 5.24cfm. I have models for the NF-A4x20 as some users already have it but since it's 10mm thicker, there isn't as much space to redirect the air before the heatsink. Not sure how much that matters, just putting it out there. 

Print View

Print Settings

I used Polylite Pro PLA+, no issues so far. 

Set your K calibration and adjust setting based on your filament 

Open the print file to see the rest of the settings. 

Instructions

Please determine what size heatsink you have in order to choose the correct model. There are 3 different heatsink sizes Bambu has used. 

• 35x18 - Horizontal fins
• 38x20 - Vertical fins
• 39x22 - Unsure (more on this below)

According the Bambu https://wiki.bambulab.com/en/p1/maintenance/mc-board the P1P has vertical fins and the the P1S has horizontal.  “The P1P board has a vertical orientation heatsink to help with natural convection cooling when used without a fan, while the P1S heatsink has a horizontal heatsink orientation for side MC Fan cooling”. 

G-Code

If you are a P1P user please follow to G-code instructions below to activate the MC fan. 

• https://wiki.bambulab.com/en/p1/manual/kind-reminder-for-P1P-enclosure 

Install

• Install onto the heatsink, no need to remove anything as it's able to slide right into place. You might need to move/manage some of the wires though. 

•  39x22 Heatsink 
  • If anyone has one of these can you please let me know how the fitment is, as well as take a measurement of the fin height? The fan casing should be ~2-3mm away from the rear panel so I will most likely need to adjust the height of the 39x22 model. 
  • Once I'm able to validate the height of the 39x22 I can add the side vents like the other 2 models have and I can create a version for the 20mm Noctua fan. 
  • For reference, the fins on the 35x18 have a height of 21mm and the 38x20 is 30mm. 

Noctua Wiring 

1. JST MX 1.25 Connectors
   1. https://www.amazon.com/gp/product/B0B3MSD154/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1 

Please refer to P1P to P1S upgrade kit installation tutorial for any further instruction. https://wiki.bambulab.com/en/p1/manual/p1p-to-p1s 

If you like my designs and want to say thanks, you can buy me a coffee and help fund the filaments I need for prototyping. A donation of any amount to Buy Me a Coffee or  PayPal would be greatly appreciated!

As always, given different printing environments, filaments, etc.,  prints may not work perfectly for everyone. If you are having issues please message or comment and I will try my best to resolve the issue.