Bambu Lab P2S / X2D Auxiliary AirFlow Diffuser

09/05/2026 update : this model is now rated “X2D compatible” !

09/01/2025 update : New improved print profiles are now in version V2! The part shapes have been optimized to increase the clips strength and reduce their failure, some slight increase of thickness for an easier print, some optimisation of the shape here and there... Some tweaks have been made to the settings for better look of the finished parts.

The P2S has now a special Adaptive Airflow System with the auxiliary air duct on the right hand side. It works great but still has the same issues than the P1S :

• it does not distribute the air evenly across the bed plate, instead it gives a strong air flow in the middle only
• When printing the first layers, the bed plate is in the path of the cool air flow, which can reduce its temperature localy and increase the risk of warping and layer adhesion

 I have made a diffuser (3 different models in fact) to counter the issues of this P2S :

• There are 3 models available, adapted to different situation :
  • The Max Flow is the basic one : the duct is larger on every direction to reach all the corners of the bed. It also pushes a bit of air in direction of the cooling fan of the tool head 
  • The Upstream directs the air in direction of the tool head instead of the plate. This one will help for thin parts which have warping or adhesion issue
  • The Step Up removes the blockage from the Bed Plate at the first layer level, so the temperature of the plate is not affected by the air flow but you still have a cooling effect on your part (better for bridging)

• All 3 have enlarged ducts and curved fins that will push more air to the sides of the bed plate, for a more even cooling effect :

• It is clipped in place, no other hardware is needed. But is can also be replaced easily to swap from one model to the other.

   

• And finally : each part is less than 4g and take less than 25min to print.

There are 1 print profile per diffuser, with 1 plate / material : I have used ASA with great success, so as PETG and ABS.

I cannot recommend PLA for obvious temperature reasons so no profile for this material.

A brim is added around the part, I suggest to keep it as the part is thin.

A good starting point is the Upstream version, then you can try the 2 other ones!