I have been reading about a fret levelling technique that includes "fall off" on the high frets. Here's a link to a page that mentions it. http://www.stevesguitarsite.com/FRETLEVEL&CROWN.HTML
I was wondering if this is a common thing to do, because I think it might help on my newly finished guitar. I can set a super low action, and it is nicely playable everywhere up to about the 15th fret or so. Above that, the strings start to contact the last frets (frets 21, 22). If I raise the action a bit, it is just about all playable. So the last frets seem a bit high? I should stress that this is just me fine tuning, but I like to tweak my guitars to as close to perfect as I can. Some people wouldn't like the action that low anyway I expect.
Now, I have not levelled the frets at all yet. I didn't need to, there were no high frets, just as I hammered them in over the main part of the fretboard. More luck than skill I imagine But after reading that page, it seems a bit of "fall off", just on the high frets, 16 to 22, might allow me to set the super low action.
The technique discussed, involves adding tape to the 10th fret and I am wondering exactly how this works. If I picture the geometry correctly, the leveller would sit on this high 10th fret and the last fret. Because of the angle, it would take more off the last fret, a bit less off the second last, less again off the 3rd last and so on, until taking practicallly nothing off the 11th fret because it is right beside the high fret. Looking at the picre, it seems he might only have sand paper on the part of the leveller for the last 6 frets or so, in which case only those last ones would get reduced - which would suit my situation.
So, does this technique have merits? Should I attempt to do it?