Well, after much to-ing and fro-ing, and quite possibly far too much measurement, I've routed the neck socket.



I understand that the neck is supposed to be about 3mm higher than the body (that is the fretboard plus 3mm of the neck itself) - and I seem to have routed a trench 1mm too deep.

I have a back-up though - i'm going to use a "thicknesser" to take 3mm off the body and put a board on the top and then machine it down so that the board is 1 to 2 mm thick and the body is 1mm thinner than it is now.
I originally thought to do this so I'd not have to find a long enough drill bit to drill the channel between the control plate trench and the pickup rout (I can simply rout a connection and then put the top on it - makes it easier to put the shielding in too).