Yes, I have seen it in a Scott Bonner video:
https://www.youtube.com/watch?x-yt-...ilpage&x-yt-ts=1422579428&v=0kZVFOA-X7c#t=565
And there is another method, I am not sure if it is known here because the video is in German, but it is very easy to understand what he is doing because he demonstrates it first with a piece of big red string before he does the real thing:
https://www.youtube.com/watch?feature=player_detailpage&v=Z-3p2YbsxaM#t=851
https://www.youtube.com/watch?x-yt-...ilpage&x-yt-ts=1422579428&v=0kZVFOA-X7c#t=565
And there is another method, I am not sure if it is known here because the video is in German, but it is very easy to understand what he is doing because he demonstrates it first with a piece of big red string before he does the real thing:
https://www.youtube.com/watch?feature=player_detailpage&v=Z-3p2YbsxaM#t=851