A little glue, a clamp or two and one by one the twelve tone bars are put into position on the inside of the soundboard.
the glue squeezed out from under the tone bars is picked up with a plastic straw cut to a point. Works great
Clamp after clamp is put on as the tone bars are set in place
Until it looks like this- the luthier's mantra "you can never have too many clamps"
And the final result, a soundboard with tone bars attached to the neck.