I´ve used MDF (like Plywood) 10mm strong for the case and 4mm for the panels. All switches are from "Conrad". I´ve printed the panels with a Laser-Printer and i used a special Foil (adhesive) to laminate the printout.
for example: http://www.schoenherr.de/shop/product/69.html
Inside each Panel you will find the arcaze interface with special connectors, also from "conrad" , because i dont want to solder on the interface.
I will make some pics, next time when the panels are open, but it looks like a spaghetti dish.
Now I´m looking for a problem solving with the multiple actions with one switch. I dont want to simulate keystrokes with the buttons. I would like to change the controller lua- file, if its possible.
Price: 50€ per Interface, 70€ Switches, 7€ MDF