Welcome to the forum Roberto.
The challenge you will find is making neat, accurate screw-threads, this takes a bit of practice but when you make something that neatly screws it a bought item it's very satisfying. I've made a few gadgets like a laser collimator and a new housing for a Microsoft lifecam, as well as a 1.25" to M42 adaptor – the first time I used this the importance of painting the inside black became very obvious!
Neil