More and more, as I look at prefabricated cases for PCs, I ask myself:
what prevents someone from building a PC with no case? For example,
why couldn't you, say, build some sort of wooden mounting area into a
wall or a desk, then mount all the components to it, so that you have
something that blends into the furniture and/or something with plenty
of open space to ease maintenance and keep the machine cooler? Why
does everything always have to be in a cramped box? As long as you
respect things like cable lengths, are there other limitations?

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