Welcome, the forum sometimes used to have a problem, and it may still do (i dunno i dont use the email updates), which meant it didnt always email people when thier threads are replyed to, so its probabaly best to periodically check back rather than rely on emails.
I dont have much to say about the thread but what you are doing seems interestng, some feedback, and maybe even pictures or soundclips of your guitars would be very cool if possible when finished.