Heat wave hit Long Island, temp just about broke freezing. I'm still so effing cold, I opted to work mostly in my indoor shop again. Worked out because today was an assembly day, with things going slow at this stage, as I analyze every detail during the final assembly. There are a few things I'm still going back with, mostly minor details that really don't impact the user, just efficient build choices.
But there is one thing I am unsettled with... the vent holes. As far as function, there's a few ways to get the air flow I need to both draw and cool. The holes need to be at the level just under the coil. I started out with two, 4mm holes on each side of the unit (180 degrees), figuring that would provide a full flow, and it did. I wasn't happy with two things, a bit large and unsightly with lots of visibility inside.
So I switched it up, three vent holes, easier to hit the level because these are about half the size. Works a bit better. Still not super crazy about the look, but no visibility inside. Half solved.
Next I went 3 on each side but in a down slope. One at 2.5mm / 1.5mm and one dead center. Didn't do it for me. I also thought about more involved designs, but I need that 2mm level.
Here's the latest idea, two 2mm holes per side, one in front. Gives a bit perforated effect and I think I like it. Have to see how it works out... Who knows.
OPTIONS
1 per side 4mm
3 per side 2mm
2 per side one front 2mm
2 per side 3mm
Anybody have an opinion?