<HTML>Melting Plastic, SOT, (Slightly Off Topic.) For hammer juice, I use acetone and keytops. I keep this solution in a plast= ic bottle. I'm no chemist, so how come the acetone dissolves the plastic keytops, but d= oesn't  dissolve the plastic bottle in which it is kept? Wim  PS. Before I get blasted for using this stuff in the first place. please be = assured I use it very sparingly only on Steinway hammers when I voice. These= Steinway hammers are first given a liberal dose of lacquer and lacquer thin= ner, as per factory specification. I don't use any kind of juice on other ha= mmers. (I keep the lacquer mixture in a plastic bottle too, (a mustard bottl= e), and it doesn't dissolve either.)</HTML>