Formulae for String Calculations

[Ric Brekne]

Hi John

Thanks muchly for taking the time to put together the webpage on your 
site. One of the questions I have, and have had for quite a while 
pertains to bass strings. You mention taking into account the unwound 
end lengths of wound strings.  The article in the Calculating Technician 
mentions this and the length of single winding end lengths on double 
wound strings as well... along with two formulas to deal with it.  And 
there is the matter of hex core vs round.

Yet... on the few spreadsheets I've seen so far... it seems like bass 
inharmonicity is dealt with far more simply.  Overs posted a spreadsheet 
a couple months back that calculates B for the wrap by dividing the 
diameter of the cover squared by the diameter of the core squared and 
mulitiplying by 0.89 (for copper).  This is then used directly to 
calculate inharmonicity  (and Z for that matter)

My question is, whether or not spreadsheets and string calculation 
programs generally take into account these end lengths for basic scaling 
work ?  How important is it to gain the extra accuracy in taking into 
account these endlenghts, hex/round... etc factors ? 

Cheers
RicB