While spending a month in the Bosendorfer factory in 1977 schraffing the
strings was SOP for the string winder. He would pick up a mill bastard file
and scrape it up and down the length of the string two or three times and then
wind the string.
I do not know how it effects tone, but the stringers where twisting the strings
then.
Newton
nhunt@rci.rutgers.edu
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