Hello everyone! I'm partway through the process of building a single cut and am ready to cut the neck angle into the body (/have already started). I *think* I understand conceptually what I'm trying to do, but I'm a bit confused about some of the advice I read/watch. In particular, I was watching this great video by Crimson Guitars:
Ben seems to be laying a straight edge along the neck plane, compensating for the fretboard and width of a fret, and lining this up with the top of the bridge (with a couple of mm to give some room for adjustment). My question is - shouldn't we be allowing in room for the action also? That is, I want to lay a straight edge flat on the neck angle, and it should hit the plane that's perpendicular to the bridge at (the height of the bridge + compensation - (width of fretboard + width of fret + action)?
The setup I have is below (apologies for my crappy drawing). I don't know if it's obvious but just in case it's not, the drawing is supposed to be a cross section down the centreline of my body, with a straight edge (the notched rectangle) along the top. I forgot to draw it in but there's ~3mm or so between the bridge and the straight edge. I've started cutting my angle in at 4.5 degrees, which I think is wrong, given the below, but I've got 6mm of top still left to cut away before I hit my binding.
I have:
14mm bridge
6mm fretboard
1.5mm-ish fret wire
Given this, I think I should be aiming for my neck plane to intersect my bridge plane at 14 (bridge) + 2mm (wiggle room) - 6mm (fretboard) - 1.5mm (fret wire) - 2mm (action) = 6.5mm above the body. Do I have this wrong? Any other opinions very much appreciated