Bro nice to see a fellow UK member here on this board, all I can say is I wish I had your skills bro they are superb and I'm sure that you'll fathom the top out sooner or later. There is a guy on here by the name of CyborgCNC who has done this sort of work before and I think he sells some How To DVD's on guitar building. I don't know whether he would be able to share what he can do but its worth doing a search on here and PM him and see where you go. There are alot of people who could tell you but won't and there are some that would love to help but don't know theirselves how to do this. I am just touching the surface of CNC and if I could help in files,info etc I would help but sadly I am still struggling to model a guitar fretboard!!!! hope you can get sorted bro as I would love to see the results. Do you have a CNC machine ? where are you based ? Kammo1.