Tks Paulie, Res, Scott and Blackdog!
I knew that somebody would talk about the few clamps.
Well, I thinks that using a guide block provides more strength to the fretboard surface. When the first clamp was pressed, at fret one, the glue squeezes for all fretboard sides, including the oposite side at end, proving that the power was distributed for equal in all surface. As the others clamps are pressed the glue squeezes are increased showing that the clamp had action on that section. Sometime I had to pull off a bass fretboard glued this way, and was very dificult cause it was very well glued.
Other thing that I consider, is the fact that the fretboard had the slots, and this fact made that the fretboard by it self looses the own hardness, if you will glue whithout a block guide, use a thosen of clamps is justified, but using a guide, I think (INMHO) that you can use five or six good clamps.
The bigsby is close to the bridge, but nothing to much, the bridge screws in the picture are very very high and the perspective of the picture give a wrong idea.
The black mark is dry glue with dust of a clamp that I put to press the side of a neck pocket.
Tks again folks!!