Prostheta / Xanthus / Anderekel : I really appreciate your support. This site is a good place to learn a lot and to show our own ideas and results.
Prospheta : about the strap, I don´t know how to make a cow, do you ? Can you teach me ?
Xanthus : don´t worry about the heal joint, the mahogany is about 20mm thick, has a jacaranda strip and I´m using four screws with metal inserts. I think that is strong enough. About the pick ups, I´ll try to make a sample record in the future to show you. Regarding GOTM, I don´t know..., there are several guitars with better characteristics and details than mine.
Thanks again friends.