Those are great pics, but how about some captions? What core material did you use? How did you get a good bond at the edges?

Moving right along, I made the first painful cut in Blue J's inner hull, about 6" square, beneath the foward half of the quarterberth. The skin had to be pried off (no delamination), and the balsa was wet but not rotted. Intending to make more such cuts and run a small heater to try to dry things out.

Does anyone have pics of how you cut around the exhaust pipe from the inside? I don't want to remove too much material.