I bought a cake of Petz #3 when I bought my first bow in 1992. My teahcer said, "This stuff will do. If you learn to produce good tone with this rosin, you'll be head of the game when you step up to a beter rosin."
10 years and hundreds of arco gigs later, I still have the same lump of Petz, though it is about the size of my thumbnail. "Time to do it," I thought.
So I ordered some Carlsson yesterday from Lemur.
What sort of tonal changes might I expect?
I'm also putting off a bow rehair. Maybe sometime before the spring.