A 60% keyboard in a 3D printed case and using Mac-themed XDA keycaps that are clones of the "Extended 2048" design. The case is reminiscent of the "Kishsaver" compact Model F buckling spring keyboard from IBM.
Bottom of the keyboard uses self-adhesive cork feet, similar to the original Model F.
case was printed vertically, leaving a few remnants of the process on the back surface. The USB port can be sued for charging or wired connection.
The plate with Epomaker Budgerigar tactile switches is free-floating, held in place by EVA and cork "gaskets." The right side of the Kishsaver case holds the rest of the Yushakobo PCB, while the left side is used for routing the unnecessarily large cables and ports designed for external use. The Primer61 uses a standard Pro Meicro for wired connections, or Yushakobo's BLE-enabled board with the same footprint. I used the cheap and readily available Nice!Nano clones and ported the firmware from QMK to ZMK. Due to quirks of the PCB's keyboard matrix, I don't expect battery use to be very efficient, but wireless performance is otherwise quite good.
Got a Primer61 PCB from Yushakobo in Tokyo! I designed a case, printed it in fun shiny filament, & ported it to use ZMK on a Nice!Nano clone. It's a Kishsaver homage that conveniently hides all my design sins. I'll leave it paired with my Mac Mini that runs all my local servers. #mechanicalkeyboard