I screwed up and neglected to drill a few holes in the lower wing halves of a B-47 kit. Fortunately, I thought, there was a bit of a gap that allowed me to get a bit of debonder down in between the halves. I started then pulling the halves apart on down towards the root. Unfortunately, the pieces then got very soft and weak, and I broke both pieces! I had never had a problem before with debonder weakening the plastic. I guess I just used too much, in this case. Before it was only to remove a small part. I sure learned a lesson.
I did get the holes drilled, and got the broken off pieces glued back in place, but I will have to fill and sand the cracks where they broke.