Disclaimer: This is not a question. More of a Share-Knowledge / Technique-Discussion. Leave a Comment should this turn out to not belong in MusSE.
I had an idea today. Please validate if this is Plausible. I don't think this was discussed earlier here in MusSE,
(This can't be done as far as I know in Most of the Electric and Classical Guitars as the strings are put in a way that they can only be removed in the bridge's direction)
When taking off the Acoustic Guitar Strings to do something in the Bridge's side, for examples, Adjust Truss Rod whose Acorn Nut is at the Sound Hole's opening or Maybe Sanding the Saddle,
1. Tuning pegs can be loosened up without causing the strings coming from Peg Heads, 2. Capo at a convenient Fret, say Octave, 3. Take off the Pins. Do whatever the purpose of Unstringing was 4. Repin strings, take of Capo and Tune back.
The problem is, maybe it's not possible to loosen the strings enough to be able to pin them back and not come out of the pegheads at the same time.
Or maybe this is a common thing. I thought of this because I don't want throw away my fairly new strings.