Print all the STL files available on the Github Repository. I highly recommend starting by the front housing 2004968E, as it is the one you'll have to work on the most (cleanup and inserts). Some parts will require using supports. A brim is very helpful too!

Use your preferred method to get all those inserts in. Don't forget to add support to the backside of the part if you're press-fitting the inserts.

Push all the Cherry MX keys in, then solder them in the following matrix arrangement (you can wire it in other patterns, but you'll have to change the Arduino code).

WIP

WIP

WIP

WIP

WIP

WIP