60mm to 40mm PSU fan adapter

thingiverse

I wanted to swap out the noisy 60mm fan from my printer PSU for a Noctua fan, but the 60mm was sold out, so I bought the Noctua NF-A4x10 FLX fan instead, which is a 40mm 12v unit. The 60mm to 40mm fan adapters I found weren't up to par, so I created my own using Thinkercad. To make it work, I had to modify the PSU fan grille by cutting it and sanding it down, then use the noise reduction and 3pin to 2pin cable adapters included with the Noctua fan. To do the install right, you'll need: * 4 x M3x16 screws (or longer, but not more than 24mm) * 4 x M3 nuts (any M3 nut will work) * 2 x M4x8 screws (or 4 if you use the squared version) * 2 x M4 nuts (or 4 if you use the squared version) * 1 x 40mm 12 volt fan (preferably Noctua, as they're silent, high-quality, and come with all the necessary adapters) The PSU uses a 12volt fan, so don't even think about trying to use a 5 volt fan. I designed two versions of the adapter: one squared with four mounting screw holes for the PSU, and another rounded one with just two screw holes that I liked better. Using the noise reduction cable adapter from Noctua along with the 3pin to 2pin adapter has completely eliminated any sound from the fan. The PSU stays cool without overheating, and it looks great too. You can print this thing rotated with the 40 mm fan side up without supports in about 30-40 minutes, depending on your print speed. I printed mine at 50mm/s.