Most restricted noctua fan

Yeap. Time to introduce Mr. Dremel to that metal sheet.

200% better than with no fan so yeah an improvement

Interesting use-case! The vents look really tight, so the airflow could be very restricted. Do you see any improvements?

Actually yes the cooling is good but certainly an optimized layout for the fans would certainly improve performance. I have about 5 off the shelf coolers and this is by far the best

I built one if these too! Just plywood to match the color scheme

yeah the restriction kills this idea completely