After each use, wipe the rosin
off of the strings and instrument body using a soft cloth. Rosin left
on the instrument body will eat away the
varnish. Over time, the value of the instrument will depreciate and the
instrument will look ugly. Rosin left on the strings will affect the
tone by preventing the bow from "grabbing" the string properly.
Once every two or three months, the instrument should be polished.
For polishing the instrument, do not use household furniture
polishes contain wax, which is not good for the varnish. For best results,
use a product that has been specifically developed for cleaning string
instruments. If you are not sure if a polish is safe to use, consult
a professional. An error in cleaning or polishing can be costly, if
not irreparable. You should also consider getting your instrument
cleaned and polished on a regular basis.