This is almost exactly how I built my first keyboard. Except of course I laser cut a top and bottom plate out of steel and used brass spacers to separate them. Costs a little bit more but I found the donor keyboard in the electronics recycling at work so it was free.
Pffft! Look at this dude who assigned a tavern keeper to the inn while still allowing non dwarves entrance to it. Everybody knows that those knife-ears and humies can’t handle nutritious dwarven wine. They get drunk and break shit. Best just to not have them in the fortress at all.