So, in order for the lid of the Calvin & Hobbes uke case to close and fit tightly, there has to be something to guide it. On other lidded cases and containers I’ve seen, they seem to put a thin inner lining piece that sticks up, creating a ridge that stabilizes and holds the lid in place. I’m using a medium fiberboard like what would be on the back of a pad of paper and I’m gluing it to the inside surface of the case bottom. It will stick up about a quarter of an inch all the way around.
I used a cardboard tube to add some curves to the fiberboard so it would fit and clamp a little easier, then I used wood glue to secure it and I clamped it as shown.
With all the pieces glued in, the ridge is complete.
The next step will be to cut pieces to go inside the case that will cradle the ukulele and prevent it from moving around. Stay tuned to watch how that gets done!