|  mrviolin
 (10 points)
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 Hi there.Your question is a commonly asked one, so I will give you the common answer. You will reconize when violin rosin goes bad - it will start cracking and little pieces will come off and make an absolute mess in your case. When this happens, your rosin can be disposed, amd a new case of rosin can be purchased.
 
 Hope I helped,
 
 mrviolin
 
 
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