Janssen info needed.

[Carl Root]

Gluing up a separated back is a good excuse for buying a set of clamps. 
Consider how small the surface area is that is being drawn by carriage
bolts, especially since the back surface is probably not a particulary
hard wood.  Use cauls for each clamp, but leave yourself enough room to
drill and install bolts after the clamps have been drawn up tight.  I
prefer picking up the clamps on a return service call when I do this job
in the home.

Carl