Made of birch plywood 3mm thick.

One customer Review in AMAZON B00NJ281BQ (in the model case without the vesa mount)
"The design is unique and there are lots of nice details (like all of the ports being labeled).
The unfinished balsa-like birch is delicate and, combined with the design, reminds me of traditional Finnish or Japanese hot springs accouterments.
The vent down the middle of the top and bottom also serve as a spring that makes the whole design work.
It gently spreads out ever so slightly, like an accordion, which allows you to hook the top and bottom onto the sides and securing the whole case.
It's basically a precisely engineered puzzle -- brilliant. Although that might make it sound like it's fragile, it feels so solid when complete that I would describe it as delicate but sturdy. You wouldn't want to crush it into a suitcase, but it's far from feeling like it might fall apart."
The most beautiful computer case I've ever seen., By John "videodromeatl"

We tried to design it to be easy to assemble, and to have the least expenditure of energy and less material waste.
Because we all know how to make a enclosure.
