I’ve had guitars for I donno, 20 years now. Only this week did I first ever oil one of the fretboard. Learned you should be doing it +/- every 6 months haha. I don’t know about that. But it does bring out the color kinda nice.
I’ve had guitars for I donno, 20 years now. Only this week did I first ever oil one of the fretboard. Learned you should be doing it +/- every 6 months haha. I don’t know about that. But it does bring out the color kinda nice.
They will be absolutely fine with strings off. If you couldn’t remove strings, it would be impossible to level, polish, or change frets. Or clean and oil the fretboard. Regular maintenance on any stringed instrument shy of a piano or concert harp or something. Actually you couldn’t even adjust the truss rod or intonation on some guitars without taking off all string tension.
One string at a time is gentler, of course, and you’re less likely to drop nuts or bridges or other hardware when there’s always a string on.
Would you say what matters most is the length of time over which you take off all strings ?