Prominently featured in Bluegrass fiddle playing, the ever-so-feared noise of a bow "squaking" over the strings can be used to produce distinctive, yet surprisingly sweet percussive accents if well controlled.
I start to get the grips of how to do this on cello, but – less suprisingly – it turns out it causes much more wear to the bow hairs than conventional techniques, indeed quite unacceptably high – about three hairs broken per minute of practising it is for me right now. Yet proficient players seem to have not such a big problem with that, e.g. Nat Smith plays entire songs with such a style on the cello, apparently without any hairs failing.
What should I mind to get such powerful accents, yet minimise wear on the bow hairs?