is stentor rosin any good?
so this stentor rosin is one i've probably been using since i started playing violin like, 10 years ago.
Ofc it was good then and for a while was working for me good too, but recently i've been curious if this rosin expires and now, whether this brand of rosin is worth keeping or if i should invest in a higher quality one since I'm at a more advanced playing level now.
In terms of its quality now: it was doing pretty good but in the last few months I've notice my sound quality go down and the bow almost slipping more despite putting much rosin on it. i mean it could be a me problem, but I considering I've tried new techniques to fix this problem I'm starting to suspect it's the rosin.
(also heres what it looks like: https://drive.google.com/file/d/1XjygcPyrNyrEp9fbSXYD2QiIYlq1hLvV/view?usp=drivesdk)
How long has it been since your bow was last rehaired? The symptoms you're describing sound exactly like a bow in need of rehairing, not a rosin problem.
I am aware that traditionally light rosins are supposed to be harder and create less bowing friction than dark rosins that generate more friction and are thought to be softer. And although this has been my general experience with many dozens of different rosins, it has not been true of all of them. My Liebenzeller rosins (I - IV and different metal fillers) were all about the same color and ranged the gamut of friction properties.
My questions to daf khan are:
Clean your bow hair with denatured alcohol. Instructions on youtube.
What the first Andrew (Hsieh) said! Sounds like it's time for a re-hair.
I use Stentor rosin exclusively as a door stop. Works well for that.
I use Leatherwood Rosin exclusively, and find Andrew Baker's catered combinations to be the best...crisp, supple, a viola blend, etc. Happy rosin hunting!