In doing reverse engineering of Clarinets I was also curious about saxophones.
If any repairperson out there is willing I am collecting the following information which I’ll update regularly on this website of:
1- make of saxophone
2 – type of sax – soprano, alto, tenor or bari
3 – diameters of each tonehole. Note, the toneholes are not perfectly round so an avg of a couple measures or just one measurement is fine.
4 – diameter of bore at a couple locations. Measure from bottom of tonehole to the opposite side of the body. Locations of (a) top of body; (b) G# key; (c) D key; (d) right pinky D#; (e) table C#, (f) table Bb.