I'm sorry, I haven't read the whole thread, but does anyone have the sizings of all the keycaps? I'm trying to see if I would be able to put these on the Smallfry/JD40 keyboard, while keeping the profile intact.
There isn't a specific JD40 kit with correct legends, but you can definitely put these on a JD40. You may need to buy some of the extra blank keys in different sizes to fill out the board, but it's doable.
You need 5 1.25x keys (Tab, Ctrl, Shift, ".", "/"), 2 1.75x (Shift, Enter), and the rest are standard 1x sizes. Spacebar is standard 6.25x size.
The specialty kit has the correct 1.75x Shift and Enter keys and there are enough 1.25x and 1x size keys on the main set to cover the board, but with a few incorrect legends. So a base set + specialty kit will do it.
You can get a few blanks for these keys instead if the incorrect legends bother you.