I always remove all strings at once and then replace them. I've been doing this for years with no adverse effects. Guitar necks and truss rods are pretty strong. I change strings about every six weeks.
BTW - I don't "stretch" my strings either. They tend to go flat for the first 5 minutes or so (while they stretch themselves)... and then they stabilize.
Others may (will!) disagree... but this is the way I do it, and it works for me.
Thanks for the input! I like the opportunity that this method gives to clean everything up.
I've done it both ways too. I don't think it matters. If you look at the instructional video on Taylor Guitar's website they show taking all the strings off. http://www.taylorguitars.com/see-hear/default.aspx?id=1004 This allows you to clean the fingerboard and frets while you are changing strings, if you want to.
Well if its just a guitar with no under saddle pick-up I remove all the strings, and only half the strings with a undersaddle pick-up. But if you know what you are doing then removing them all is no biggy any more with the necks being so much stonger then they were in the very old days, but I say develope your own way of doing it
and whatever works for you is all that matters.ship
Thanks Ship your input is appreciated!