Hi fiddle players...
I recently took up practising the violin again after more than a decade's almost complete abstinence -- and decades since I had a lesson. This also involved getting some new gear. I've had some experiences I could call "educational". So for the enlightenment of anyone planning a similar comeback (and no doubt the entertainment of the rest of you) I can offer a few tips.
Isn't anonymity a wonderful thing?
So here are Tips #1 to 3 in the series "Taking up your violin again - for dummies"
If you get your bow rehaired its best not to throw out that old bit of rosin lurking in your case before you've got your new bow hair rosined up again -- unless there's someone else's rosin you can borrow for a bit -- because with a perfectly smooth new lump of rosin & new bow hair, try as you might, there is just not enough friction to get the rosin on the bow.
When the truth of Tip #1 dawns upon you its best not to roughen up your new rosin with a nail file encrusted with diamond [edit: I mean glass] chips. Unless you were planning to perform a rendition of "The Devil Went Down to Georgia" and play the devils part...
Your new bow hair might not sit quite so flat after you've vacuumed the #*#*##* out of it