A. Gibertini 1797–1866

Over time tension on these maple board warped them in across the grains and along the grains. This repair takes a long time to complete. I had to make a plaster cast and press the plates into the original shape, second I used a system of clamps that allowed pressure in a particular way so that it would glue without the two plates being taken apart. The center joint was quite dirty, but after cleaning, it glued perfectly. A trick is to glue a short section at a time, to better control that the two sides are aligned.