Finally some bass progress - Made a couple of MDF templates from measurements taken from the pickups. As above, I had to use a 1/4" straight bit to get the correct radius on the corners, so once I had made the templates, I sealed all the edges with wood glue to make sure the were hard enough to withstand the high speed bit with no bearing and I did most of the routing with a larger bearing bit, then just used the straight bit to get in the very corners.
Did a test route first on a walnut offcut to get out the template. it was all good except not deep enough.
Marked out locations and hogged out waste with the pillar drill
Then routed, managed to get them perfectly square on the centre line and square with each other fortunately, because I need to make a ramp out of some pheobe wood offcuts to go between the two pickups.
Also did a test first, starting to look fairly basslike now. In fact it's not really that far away. I just need to drill holes for the 5 pots, bridge and an earth wire, sand the hell out of it and spray some lacquer. Hopefully all that won't take another 6 months.