Last weekend, I decided to take Sunday off just to mess with the neighbors a bit and get some work done—specifically, putting two things on my case.
I ordered a used Corsair 300 from a guy on a forum about a month ago. The case was missing one of its 5.25" covers, but I don't actually need it since I plan on filling that space with an SSD. It was also missing two expansion slot covers, though that wasn't an issue for me either because I'm running a dual-slot graphics card. Because of those little imperfections, I managed to snag it for a pretty low price.
The case arrived in great shape—no noticeable scratches and barely any dust on it. I paired it with a 12cm Noctua NH-series fan running at 800 rpm for the intake, along with the stock 14cm fan for the top intake.
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I’m planning to pull this cage out of my case to improve airflow. Honestly, I just don't need it—I'm not running six HDDs or anything like that. Besides, the one drive I actually use is going into a 5.25" bay instead.
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To get this done, I had to drill out the rivets and strip off the entire top panel just to reach the cage. You use a drill to pop the old rivets out, and then you need a specific tool to set the new ones—I ended up borrowing one from a friend.
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The power supply goes in that spot. It’s oriented facing up so it can pull in air for cooling. I actually wanted to flip it downward, but I would have had to drill a hole to make that work.

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I also went ahead and drilled out the grilles on those 12cm cages since they were just getting in the way of the airflow. Since the case already has a dust filter and a perforated front panel, those extra grilles aren't really necessary anyway. It’s not like anyone’s going to hurt themselves on the fans.
I just got two Flow 2 fans in—they're rated at 1900 rpm, but I currently have them running at a steady 7V.
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This is what it looked like without the "cover." Looks pretty bare. 😬
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And without the case...
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When it came time to drill that first hole, I realized I was seriously lacking the right tools. I had also planned on drilling some extra holes for better cable management, but that fell through. It was Sunday, and I couldn't find my Dremel anywhere. Plus, I had to be extra careful with this specific hole to make sure I didn't accidentally drill through the case legs.
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This was the final result. I had to go ahead and add a custom paint job, obviously. Grey is just such a boring color.

Once I finally get my hands on some decent tools, I'll snap some photos of the finished build. Honestly, I’d much rather skip the cable management mess if I can help it. I ended up keeping one of the case panels aside for now, though—it actually makes the cabling a bit easier since it follows the original chassis design.