You may well be correct Richard, but I think Buddhuu and I were probably working with the KISS principle, for people who have very modest DIY skills.

there's a wealth of stuff out there for then serious amateur-tech-luthier type of guy, Frets.com or www.bryankimsey.com/music/lutherie.htm to name but two (which I know are good resources).

Dressing and crowning frets is probably the kind of thing that even the most enthusiastic amateur should practice on an old, low-value instrument before starting to fart around on a decent guitar?

That's IMHO, of course and, if you're a braver man than me, Gungha Din, YMMV. :-) :-)