Yes I love wood and metal and the processing. To make musical instruments is twice as 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 to string the instrument for the first time. My hands shake, even if 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?