Noice!! I cannot offer much knowlegde here, but I’ll be cheering in the background for your endeavours. I’m actually in the wishful stage of a similar project; I got 3 old (intel duo) computers I’d like to (somehow) merge into one massive server. And I’d like to make my own case as well. So I’d love to learn from your wisdom

Which CAD software are you using btw?

Yes, it exists, but that practice is generally frowned upon and discouraged (at least by me)