Just had my piano technician tell me that my hammers have really been hitting the strings too hard, and more strings will break if I keep it up. (he was here to replace a broken string) Anyway, from seeing the shape of the hammers etc he was able to tell that I must play with a closed piano, and during loud passages, I inappropriately press the una corda pedal.
My problem: My family! They live in the house too. having a loud piano banging all the time is annoying, so I always played with the lid down, and I tended to use the una corda pedal when I am not supposed to (like, during fff

), just so the house is more livable for the people around me.
Don't do this; Don't do what I did, or you will bust up your strings, ...like I did!!The problem is, the music really does need to be louder, so while playing on a closed piano, with the una corda pedal down, I must have pressed too hard, while subconsciously trying to make it louder. Bad! bad bad dont do it! What happens is you bust up the strings on your home piano, and when you go play in a concert on an open piano, you bash the hell out of it by accident, by not realizing you arent at home anymore.
Just advice for people who might be thinking they are in the same boat as I was in (living with people who make you play quietly): If you want it louder, open up the piano lid a bit, and lighten up your touch. Absolutely everything gets better. When I first decided to do it, I had to consciously pay attention to the loudness I was creating, as with an open piano, I can get the equivalent sound of a closed piano much more easily.
summary:
save your strings! Open up the piano, play with lighter touch -use arm weight, never
push down-, and don't use the una corda pedal as a method of making the sound friendlier to the non-musicians of the household!
unless, of course, no one else here has that problem, in which case I'll just shut up right now
