Topmusicanswers
With lots of students the cause of a squeaking E string is that they don't bow exactly straight and that the bow 'wanders' over the string back and forth. The E string will whistle when you don't bow straight, listen to (and watch) the demonstration in the video to hear and see the difference.
How do I get my violin to stop squeaking?
Keep the pressure and speed constant while bowing up and down. To avoid the squeaking, some people try to play with very little pressure all the time. Instead of the squeaking, you'll get whistle tones. Just wiping the strings with your bow solves the issue of squeaking, but doesn't create a beautiful sound.
Should I wipe the rosin off my violin strings?
Rosin dust should always be wiped off the strings and fingerboard as well. For this purpose, it is best to use a soft cloth. ... Pure alcohol can be used to remove more stubborn rosin build-up on strings, although extreme caution must be taken. Put a few drops of the alcohol on a clean cloth and rub the strings.
