I would think twice before trying to reduce the noise level of UM2 by changing the fans. The fact is that in such small size the noise level and airflow go pretty much hand in hand. With larger diameter fans you can reduce noise by design and number of the blades, materials etc - with very small ones there's much less room for such smart noise mitigation.
Of course the side fans can be replaced with a different type of ventilation design altogether, that's another story. But replacing fans with ones of similar size will not help a lot - the ones used by Ultimaker are of high quality. If you win in noise level, you'll lose in airflow. If lower airflow is acceptable for the side fans, why not just reduce their speed? Cura has good options for that.
What comes to the rear fan, I really wouldn't lower its capacity. Using weaker fan will raise temperature of the print head - and the airflow towards the PTFE isolator will be even warmer than it already is.
If the noise level of UM2 is not acceptable, you need to either take into use a different print head or to build some sort of enclosure for the printer.
Recommended Posts
solid-print-3d 30
Just out of curiosity, does the new quieter fan move the same amount of air as the UM2 stock noisy fan?
Link to post
Share on other sites