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BIBO PSU cover, low profile, for 7530 radial fan

by SergeBu Jul 4, 2019
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So, I'm actually interested in what you did to the other fan, the one for the motherboard. That's a crazy amount of mods on there. Does any of it reduce noise? And if so, how did you do it all?

For the motherboard, I designed a small very basic fan mount and used a small length of PVC pipe (cut in half) to guide the airflow to the mosfets heatsinks, as the Noctua isn't as powerful as the stock fan. (just tell me if you want the 3D file)

So basically, I changed all the fans:

  • on the print head, 2 Noctuas for the extruder / cold bar cooling fans and a 50x10 radial fan for the part cooling (see picture)
  • on the bottom side, a Noctua for the motherboard (with its rubber dampers) and a 75x30 radial fan for the PSU. On this last one, I also adapted a resistor from the Noctuas to lower the RPM, thus reduce the noise.

Overall, the most noisy parts are now the steppers (Y, then X axis) followed by the part cooling radial blower (rarely pushed to the limit, though) and its noise mostly comes from the airflow, not the fan itself.

Okay, cool. Thanks for the reply. I'll look into those Noctuas, though I found that replacing the metal mount for the motherboard fan with an ABS one cut my fan noise in half, just by itself.