Forgive me if the answer is obvious but how do you do this without getting it on the sides?... Do you tape it off? Is there wax involved? Do you accept that some finish will get on the sides and then just sand it off afterwards? I want to to finish just the face of my headstock with multiple coats of Tru-oil and don't know the first thing about this. I guess an option is to just apply the oil on the entire neck and maple fretboard but I want to explore this possibility first. Any input would be appreciated. Thanks!