Hey David, this is very interesting. I honestly haven’t heard of this before but I don’t see why it wouldn’t be true. You should post the link as it would be interesting to see it in action. Honestly I wouldn’t want to mess with it, but then again I never get my bow hair dirty. If you always manage the bow with just touching the stick, you really never have to worry about getting the bow hair dirty. I’ve had a lot of students over the years not follow this advice and I’ve recommended they get a re-hair if the hair has surpassed a certain dirtiness. Looks like there is another solution I didn’t know about!