Originally Posted by: dlwalke

So this was a fun little project. I calculated the points beyond the fretboard that would give me octaves (2 octaves up) if playing at the indicated frets, as an aid to getting accurate pinch harmonics. Seems to work pretty well.

Looks like a Brian May guitar! Looks like your postions work for the natural harmonics. But remember that as soon as you fret a note the entire harmonic location changes based on the adjusted length of the string.

And the entire point behind pinching in different places is that you are effectively "replacing" the bridge with your thumb graze temporarily. This means the calculated distance is between the fretted note & your thumb when you pick. At that point the open string harmonics are irrelevant.

Hope that helps!