bill of materials

You will need:

• a PCB. PCB files are available here or here.
• 58 choc switches of your preferred style and 58 keycaps
• a nice!nano (you could probably bodge another pro-micro-footprint microcontroller though, if you don't want bluetooth)
• 58 1N4148 DO-35 through-hole diodes
• through-hole reset button. The really narrow inline ones. the footprint is for "TVBP06" one, but you can find a ton of things that will fit on digikey
• SMD power switch (if wireless). JS102011SAQN is the footprint but there might be something else that fits.
• battery (if wireless). i used a 350mAh battery from adafruit, and designed the pcb so that there was space for it to fit
• If you want to hotswap, 58 choc hotswap sockets
• 2 sk6812 mini-e (reverse mount) leds (check pinout)
• mill-max sockets and mill-max pins for mcu

sourcing

all of the generic components came from digikey, as well as the mcu sockets. i got my switches, hotswaps, caps, and nice!nanos from various small keyboard shops online.

pcbs

I ordered from JLCPCB, and it cost about $20 for the boards and like $18 shipping. the board is 264.5x132.2mm. i did white soldermask to match my sofle but it probably looks good with black. you want 1.6mm, remove order number, and otherwise the cheapest options.