>This is the high A (16 5/8") & A# (16 1/4") of this particular Autoharp. >I've trying to use .020, and then went to .018. >But both broke. I'll try .016. He asked for the speaking length and the pitch, as well as the wire diameter. The reason being to calculate the percentage of breaking strength the wire is at when it's at pitch. Theoretically, a string of any given diameter (within reason, and made of the same material), and of a given length, will break at the same pitch. Yes, at the same pitch, whatever the tension happens to be when it pops. Break% at a given pitch is determined by the speaking length (and wire material), not the wire diameter, which is why he asked for the speaking length as well as the pitch. In practice, the smaller diameter wire will break at a little higher (but not much) pitch because it is work hardened more (or at least the crystal structure of the steel is changed more) by drawing to the smaller diameter. I'm assuming these are carbon steel music wire. In any case, if you supply the information that was requested, anyone who does string scaling could tell you what your chances are of getting this to work. Ron N
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