Tips for designing a quiet case for a board? - eviltoast

So, I’ve made the mistake of entering a keyboard store in Berlin. Nothing ergonomic there, so all they deal with are great looking boards, heavy, well built, and quiet!

I’ve built and designed my share of boards, and the sound hadn’t bothered me at all until recently. I’ve designed my first 3d printed case, it’s a one piece, just needs a bottom cover.

It acts like an amplifier to my typing. It’s not a pleasant sound at all.

What would be the best way to design a quieter one piece board? What materials could make a difference? I was thinking of a metal switch plate, can It be used together with 3d printed layers? Wood? Should I use foam?

Looking for a choc build (more difficult due to lack of silent choc switches) as well as an mx build (probably bobba u4 switches, which will take care of most of the noise)

Thanks!