Official Raspberry Pi 4 Case Bottom Ventilation Template

thingiverse

Minorcoma's RPi4 official case fan mount template worked very well for me. I decided the case could also use some more ventilation to facilitate airflow since this case is basically a sealed box. I can't say if these vents do much to help with airflow and cooling because the Pi does sit very close to the bottom of the case and fits pretty tightly around the edges. So, that will impede the potential of these vents. The majority of intake air probably still makes its way in around the USB/ETH ports. However, the template works as designed and I figure it can't hurt to have a bit more airflow ability. My main hope is that these could at least slow down the accumulation of dust inside unused USB/etc ports over time. Not a big deal but if I had to choose where dust builds up, having it being stuffed inside ports would be my least desired location. I should note that using the rubber feet or something similar to let air get under the case is necessary. Otherwise, these vents will be even more useless. I used a 3/32 inch drill bit. 3/32nd inch is what Minorcoma stated for his design and is also what I used to broach holes for his fan template and what I used for this bottom template. In metric that would be 2.38mm or practically 2.5mm. basically you want to use a bit that fits tightly. Since my design is only to provide ventilation exact diameter isn't an issue within reason (don't go big and blow it out.) The template fits nicely but I still recommend taping it in place to keep it from shifting or popping off while you work on it. Also, of course remove the Pi first and have a sacrificial piece of wood to set the case bottom on so you don't drill into your work surface.