God I hate frets with ends like that. They feel bumpy to me. Ick.
Here is the way I do it. First I bevel the fret ends with a file (you can just hold it in your hand, or you can mount it in a block if that helps you keep a consistent angle). Next, I use a diamond fret file to sort of "roll" the fret ends. The file moves parallel to the frets, but as you go you lift the handle to round the ends of the frets. Then, when I am sanding and polishing the frets, I work the piss out of the ends of the frets, starting with 60 grit (yes, I said 60 grit - internet woodworkers and guitar repair folks always seem to under-rate the usefulness of 60 grit, but it works fast!), ending with 2000 grit and then OOOO steel wool. It gives the fret ends and the fingerboard edge a really nice played in feel. Most of my customers seem to love it too, or at least the ones who notice it at all rave about it (which is exactly 2 guys who have mentioned it, both of whom spend more hours in a day with a guitar in their hands than I do on any three).
Light
"Cowards can never be moral."
M.K. Gandhi
