Sorry heres where im at the now, some of the comments are from a while back.
Truss rod channel routed into maple blank
Last weekend I made myself a radius jig for my belt sander, tried it out yesterday and it produced a fairly decent radius, much better than all I've managed to get with blocks. However i set the thickness a little to thin and i may have ruined the fretboard, what do you guys think, how thin is too thin, its down to about 3-4mm at the edges.
Decided to go with another thicker board. here it is glued on the neck ready for carving.