Re: How do you stay in tune?
How do I stay in tune? I cheat and use a double-locking tremolo. Hard to be a a properly set up double locking setup for tuning stability.That said, the biggest things I found have been already mentioned in this thread, but I'll go over them anyway.
When installing new strings, stretch them. New strings that have just been taken out of the envelope and put under tension will stretch a bit before they settle. If the strings are stretching while you're playing, you'll have a hell of a time to trying to keep the guitar's tuning stable. I'll put on a string, tune it to pitch, then pull up on it nice and hard to stretch it. You don't want to pull so hard that you snap the string, but a nice strong pull ensures that any stretching the string is going to do is going to happen right then and there. So I'll put on the G string, tune it to pitch, give it a good stretch, check the tuning and discover the pitch has dropped down to a flat E#. I tune back up and repeat until the string no longer goes more than 20 or so cents off pitch from stretching. Sometimes I break a string anyway during string changes, but that's part of why I buy spare strings. Doing it this way does take a bit longer, but at it does help with keeping tuning stable.
Another thing I'll do is when it is time for a show or a rehearsal, is show up early and bring my guitar inside first thing. This minimizes the time the guitar spends in the car, which is usually much hotter or colder than indoors, minimizing the temperature changes the guitar has to go through. Sitting for an hour or so inside the building where the show is being played gives the guitar a bit of time to acclimatise to the building's temperature and humidity and settle. During setup for the show, I'll check the guitar's tuning, and make any adjustments needed. I'll also check between songs, but often it doesn't need any adjustment.
Finally, setup, setup, setup. If your nut is out of whack, the bridge is set too high and is binding, the tuner pegs are loose in their holes, or the truss rod is too tight or too loose, tuning stability is just one thing about the guitar that's going to suffer, nevermind playability.