I just noticed some dirt-like material on my E-string. Does this mean that the metal is wearing away or something? My E-string is a little rough and goes slightly sharp after I release my bow from the open string. Is it going to break or be unusable soon? I have an audition this week.
What are the chances of injury due to a string snap?
It may be wear from your fingers not necesarilly going to snap, but I would replace ASAP anyway. From my understanding, injuries from string snaps are not all that common
For how much time have you been using that E-string? Which string is it?
I have been using that E-string, which is a dominant E-string, for between six and twelve months.
Odds of injury are essentially zero. If your string is false it's gotta go, especially before an audition.
Time to change it then, and try another E string, Pirastro Gold or Optima Goldbrokat.
If your open string is changing pitch, it's definitely time to change. The good thing is that, since most E strings are made of steel, they are quite dimensionally stable (a plus if you have an audition next week), and also dirt cheap.
Or why not go for broke! (Warchal Amber E will cost you $8.76 at Shar . . .)
There are so many string "experiments" yet not done.