Universal Rear Electronics Case Left Side Modified for 3 Buck Converters

thingiverse

The default left side case worked for one of my buck converters but the holes along the top were meant for something else entirely. I've since rearranged the holes to allow two more buck converters to fit snugly on top. I'm not certain if most or all buck converters are identical in size, but these ones I designed specifically for this project can be found here: https://www.amazon.com/gp/product/B07RT95J4Q/ To improve airflow, I plan to add lids with holes for 80mm fans that pull air up and out. This prompted me to remove the fan hole from this side case and replace it with four vents positioned right next to the Raspberry PI. While I'm no expert in air flow engineering, these vents might be better placed on the opposite side of the Pi or even on both sides, given that the Pi 4 is said to generate more heat. Even without a fan connected to this side yet, the heatsink on my Pi 4 hasn't even warmed up, which is reassuring. I've saved an earlier version of the file with the fan hole intact for anyone who might need it. Initially, when attempting to fit my Raspberry PI 4, the usb ports didn't quite fit due to what appeared to be a slight sag in the opening during printing. Perhaps a more powerful parts cooling fan would have prevented this issue, but I haven't had time to create one yet. Instead, I increased the openings by .125 mm on both the top and bottom of the stl file, which I've attached, though I haven't printed the revised version yet – I simply sanded my original print. This is my first modification project using 3D printing, and it was a fun challenge to undertake. I hope this adaptation will be useful for others and help them with their own projects. I've included the sketchup file for anyone interested in making further modifications or improvements. Thanks are due to @TeachingTech for creating the original design that inspired my modifications.