The chess board
The idea was to modify an "ordinary" wooden board into a sensory one, so you couldn't see the difference, except for the small mini-USB connector installed on the side.
The chosen board:
I protect it with plastic adhesive, to avoid scratches, and I begin with the milling on the bottom side:
It cannot be milled in this way: the board must be immobilized firmly.
Obviously the board is not solid wood.
Milling completed, with a depth of 10 mm
Detail of the space where the microcontroller board will be.
And now I prepare the surface and I install some wooden spacers, that will be used to fix the covers with screws:
Repairing defects with putty and installing the wood spacers for the covers.
The whole surface is white painted.
Making the covers from a 3 mm MDF panel:
In the following draw you can appreciate the measurements: