We had lots of discussion on the loosely wound end of bass strings. In their latest catalogue this is named as a feature of the 815 string: Flitterspinning, page 8. They are clear it should go to the tie block not the head stock. To me it reads as if it should not be cut of entirely, but be used to tie the knot.
The description how to do it is not very clear to me. The German version of the text didn't give me many clues either.
Any comments/suggestions here? Thanks.