Sorry, I should have included more info.
I saw the technique of scraping on the StewMac video "Spray Fininshing Basics" by Dan Erlewine and Don MacRostie.
So, it's not nonsense.
I've only built 4 guitars and none of them with binding, so maybe I shouldn't have said anything.
Anyway, check out the video, it's pretty good for beginner and intermediate finishing techniques.