Hi Alan.

I'll tell you what I do. I let it make contact at the very ends. About a 4 or 5mm strip at either end (similar to the thickness of the sides of the box) so that the bridge pressure pushes the box and the neck together. The rest is cut back enough to allow the lid to vibrate free. I have seen them glued and even just screwed together and seen examples where that works too, but I'm not going to repeat the CBG mantra of "no rules".

All the best.

John

Alan, I got me a fret chart from www.harpkit.com .. cost me $12.00 and has been one of the best investments and tools that I have . I Use it on every build and it's so easy to use ..I think it goes from 13" up to a 38" fret board in 1/2 inch incliments.If you know what length fret board you want just find it on the scale , place it on your fret board and mark it off .. Plus it has a fretting guide on it also ... Great tool hope this helps ..\