You stated that you placed a single bead on the face of the fir
before clamping the first time. Did you spread the bead so that
glue covered the entire surface, or did you expect the clamping
pressure to redistribute the glue? What were the dimensions of the
face of the board, in particular what was the width?

it sounds like it was not spread. you get a little bit of adhesion from the glue
migrating but it is not very strong. It needs to be spread so you have a shiny
layer over the whole surface. then you can clamp it up. it's like any other glue
in that way but you only need to do one side.

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