Flirc 25mm Dual Fan Cooler
thingiverse
This is a remix from https://www.thingiverse.com/thing:3857182 CWCID to Mantis4g63. I really like the idea of active cooling the heatsink that the FLIRC case basically is. This will work for both the Pi 3 and Pi 4 FLIRC cases. Only drawback I can see in the design is the mounting tabs are very fragile and might be better if you print in a stronger filament. I just used the PLA i had on the printer at the time. Take your time mounting it and you will be fine. The finished product looks very nice. I remixed it to exhaust from both sides of the case and mounted the fans on the inside for a cleaner look. The Pi 4 does seem to exhaust a little better than my Pi 3 case does, YMMV. I might print a fan cover in the future but its not a concern for me. The fans that I bought from Amazon was: MakerFocus 2pcs Raspberry Pi 4 Fan Raspberry Pi Cooling Brushless Fan DC 5V RPI Dual Cooler Fan Cooler Radiator for Raspberry Pi 4 3B+
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