Construction of a shielded keyboard

Step 5: folding the border

Put the circuit foil into the shield and align the holes.

Fold the aluminum foil along the border, over the circuit foil. The aluminum foil must not go beyond few millimeters, for example 5 mm. It is better to not let the foil reach the key pads to avoid extra thickness in that points.

Close the shield and fold again on the outside of the opposite side.