I know what I need to do to lower the action on an acoustic, but what grit sandpaper should I use? Also, how much should I sand off?
fine sand paper works the best, and it doesnt take much so dont keep sanding and try to figure it outit just doesnt make u work, that is how i screw up my last guitar
use a fine grit ....id say approx 400. Take off small amounts every time you change your strings till u get it right. its a slow process but its the best way to get it right.