That did not solve all of his problems, however. There are many kinds of brass alloys, and no matter good he got at achieving the desired dimensions, it was fiendishly difficult to get just the sound he was looking for.
然而舊銅種類很多，添加成分及比例又不一定，打造出來的銅鑼，儘管外型再像樣，音質就是不盡理想。