And now on to repairing the rib crack from the endpin.

This photo shows the careful removal of the old hide glue in the crack. First, the glue has to be heated with warm to hot water to dissolve it. Then the glue is scraped out.

Glue removal from crack from double bass endpin.

This photo shows the pre-glue test. I was lucky enough to have a U-clamp that fitted into the endpin hole. Here, too, a wedge is used only on one side of the crack to get a flush surface.