Very nice. It looks like your skills are improving.
Thanks. Guess I was successful in hiding the imperfections then
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I changed some parts of the process - some of them had good effects, some had unintended side-effects. Like wet-laying, I think I waited just a couple of minutes too long - it was colder than the tables given by the manufacturer, so extrapolating the time from the tables required some guesswork. That lead to some of the layers having inconsistent thickness when compared to my previous attempt. I do think that it is not really visible from the outside. And even though I still made the cutouts by hand, I changed the way I secured the layers before cutting, leading to much better alignment of the keys.
Oh, and of course the big surprise - the ergodox firmware has the rows and columns swapped for some reason. This means that the diodes are also wired the other way around. And lazy me assumed that the designer made reasonable choices and wired the diodes correctly, so I lost a couple of hours adapting the firmware.