I printed these with the flat face on the build plate (using a smooth plate) at 0.16mm later height. If you have a 0.2mm nozzle I'd recommend it to get the legends looking a little crispier than I got them.
The author remixed this model.
I added a 2U spacebar to they would work with my 12 x 5 ortholinear board (based on a Preonic) and created 1U versions of some of the modifier keys.