I’ve drilled the control post holes (10mm), each 4cm from the edge. The volume is directly below the bridge pickup, with the switch 10cm back and the tone control at the mid point. This is the same setup as the last guitar and it just works for me.
The jack socket was drilled using two spade bits, first the larger outer (25mm) and then a smaller inner (22mm). The cut wasn’t clean as I had to do it with a hand drill. I need to see if I can find a way of clamping the guitar in future to use the drill press for these (for safety as much as anything). The end result is pretty reasonable.
I mistakenly drilled the switch socket to 10mm, but I believe Switchcraft shafts need a 13mm hole – so that will need adjusting. The top is too thick for the pots, even though they say they have 9mm threaded sections. Once the switch arrives I’ll have a look at doing a test fit and working out how much I need to thin the top around the control holes. After that, I’ll do all the wiring onto a piece of MDF drilled to the same places, so the whole wiring harness can be dropped in with minimal work inside the guitar.
Oddly the neck screw ferrules are 14mm this time (last ones were 16mm), so I’m waiting on a new forstner bit to be able to fit those. Decided to swap to black pickups and hardware mid way through (mainly as I think it’ll work better with the darker purple top colour).