This is a case for the temper keyboard by Raeedcho. I have created a github repository with all the additional information including build guide:

Github repository.

There's two versions of the base: One for use with heat set inserts (recommended) and one with self tapping holes (I have not tested this version).

The print profile already has the mirrored sides, but if you download the raw model files you will have to mirror them to get the right side.

You will additionally need:

• (10) M2x10mm screws
• (2) M2x6mm screws
• (10) 6mm OD / 3mm ID / 1.5mm thick o-rings
• (10) M2x3mm heat set inserts.
• (2) M2x4mm heat set inserts.