Yes, I love wood and metal and the workmanship. Building musical instruments is doubly good: you build something, something that has its own voice, a sound, a timbre, a life of its own.
The construction, the building itself, is exciting. But I know of no more exciting moment than stringing the instrument for the first time. My hands tremble, even though I am sure that the instrument can hold the tension of the strings. But how will it sound? Do the frets fit, how does it feel in the hand? What was it like the very first time?