I have been working on the neck of the tenor uke (the 'mystery' instrument). All was going well until I discovered that the sycamore was full of woodworm flight holes. First, I tried to patch these by drilling out the holes and filling with sections of wooden toothpicks. And then I thought...what am I doing? Do I really want to make a neck out of timber full of holes? No.
So, it was back to a new piece of sycamore and start again. The second photo shows the new neck clamped up, next to the wormy old one (which is destined for the rubbish pile!).