ICYBOX IB-NAS3221-B Front door conversion to fans

thingiverse

I got fed up with fans breaking and hard drives overheating, requiring frequent replacements. While struggling with a failed 60mm fan from the back of my ICYBOX IB-NAS3221-B dual HDD NAS enclosure, I wondered why on earth an extractor fan was installed without airflow, creating a partial vacuum. This sparked an idea to add a fan on the front as well. Luckily, the front space when the doors are open measures 60 x 120mm - just enough room for two fans. I decided on two 12v fans and soldered them in parallel onto the 12v input socket at the rear of the unit's PCB. Alternatively, you could wire two 5v fans in parallel to the USB socket at the rear and connect to it by cutting a USB lead if you're hesitant about soldering onto the board. Using slim 3.5 inch HDDs allowed ample space between them for fan cables to run from front to back. That's my background story. I'm new to 3D printing and designing, but this project worked out well, and I hope it helps someone else keep their data safe by improving airflow over their hard drives. Feel free to modify the design and share your changes with me. The two vertical bars on the adapter under the springs are there to help support material stay in place during printing - they can be left intact or removed afterwards.