Design Issues!

Apart from tackling the keys, there is the keyboard support and design issue to tackle!

Looking at various vonSlatt-type keyboards, the top and bottom edges seem to vary.

The actual vonSlatt appears to made of plain brass channel that holds the top and bottom edges of the keyboard...

Whereas Datamancer's keyboard is held by brass rods both top and bottom...

Similar to the Warehouse 13 arty's keyboard..

Out of those, I much prefer the brass rod top and bottom effect, however without a proper milling machine to mill the slots in the brass rod, then this will be unlikely!