In this video, can anyone explain why he scraped the strings with an awl like tool? https://www.youtube.com/watch?v=oJGD6GyEmKU&feature=youtube_gdata_player
The tool is called setting off awl, for straightening the mains and the crosses when the stringing job is done.
did you mean this tool? http://www.tennisman.de/bespannmaschinen/werkzeugzubehoer/babolat-saitenausrichter-p2053.html