How to know when my bow hairs need to be rehaired?
When/how often should a bow be rehaired?
When you start raising your shoulder and pressing your bow with the force of a hydraulic press and are still unable to get a strong sound. Or when the hair stretches out and looks really janky.
For sure when you have broken enough hairs that you can tell at a glance that your bow has had a hair cut - or when you have you have lost enough hair from one side that the stick bends when you tighten the hair.
When following Andrews recipe, make sure the alcohol will not touch the stick, it might damage the polish. Before doing so, use a dry tooth brush to remove the mobile rosin parts.
If you look at your bow hair and there is none, It's time to rehair :)
I do not worry about it. I just follow my luthier's recommendation which is to repair about once every 120 hours of playing (same for strings). For me, this means once every six months. I have never had a problem with my bow hair following this protocol.
120 hours is too short an interval. That's really wasteful.
"120 hours is too short an interval. That's really wasteful.
Well, we can clearly see that after 120 hours of use, the hair is still fine.
Alternative answer: I have several bows. It's time to re hair when you compare your bow with a recently haired one and you feel that the grip has significantly lost.
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