Rosin for AC room
I was reading about rosin types and looks like for hot and humid climate is supposed to be light and for cold and dry dark rosin.
I couldn't find the specific answer for AC rooms, mine is mostly 24 Celsius and 50 to 70% humidity.
Not sure how much the rosin type influences.
Hardly makes a difference really. I think people's satistaction with rosin is more a reflection of the price and packaging than the actual product. That said, Guillaume really makes my playing so much better and I could never go back to anything else!!
That's not too cold, and on the humid side. What you're really asking about is a summer rosin. Keep two around that you like-- one will generally be better than the other on a particular day-- depending on the violin, bow, and strings.
I'd use a harder "summer" rosin because of the humidity.
I play in a room similar to yours, and I am currently using Andrea Rosin. I think the fact that they don't make a light and dark variant of every rosin says that it doesn't matter much.
I use Melos Dark for both summer and winter, indoors and outdoors. Though I also use Eudoxa strings and they generally prefer more grip over less, so even in the hot humid summer I don't have a problem with my rosin becoming overly sticky.
Thank you all for your replies. I'm currently using Pirastro Schwarz and sometimes the sound gets scratchy (bear in mind I'm still a beginner), it does seem to be low on dust so that's a good point. On the other hand I have a Kaplan Light Rosin and although the sound seems to clean up a bit the grip is not the same.
If you look long enough on the site, you'll see hundreds of choices. The Cecilia Solo (ex-Andrea) is a good all-rounder. Their A Piacere and Signature also have fans, deservedly so. Those are a bit more forgiving in response.
One important point to take note of is that the color of the rosin does not necessarily represent its properties. The Schwarz for instance is a very hard and non-sticky rosin despite being very dark in color, which may contribute to your scratchiness problem since you may be applying too much rosin to compensate for the lack of grip.
I use separate rosins for violin, viola and cello.
I just find a healthy looking pine tree and rub my bow against that until I'm satisfied.
I switched between rosins depending on the weather. For a long time my pairs were Jade and Millant-Deroux Gold/Silver (same manufacturer as Jade, by the way). Now I switch between Leatherwood Crisp and Supple. I've found the 75/25 blends to work well for me.
I have 3 rosins, which listeners can tell apart. The dark one I use gives a very scratchy sound at higher humidities. The hardest one gives a bow sliding sound at lower humidities. They really do make a difference. The Hill light seems to be usable at all the humidity levels that occur in my apartment through the year.
One last thing about rosin - do not allow thick layer to collect on your strings. Wipe them off with a cotton or microfiber cloth - definitely EVERY TIME you put it away after a playing session.
Thanks for the advice. I did clean the hair before and what not... the scratchiness always come back, even with two different bows that's why I blame the rosin... let's see what the teacher says next time she comes by.
Perhaps she will let you borrow 3 microns of her own rosin, to see if there is a difference. You could always swap...
How long does rosin last?
Care should be taken in scoring rosin. I never score a brand new cake of rosin because in an amorphous material a scratch is the beginning of a crack. That's why we have rock chips on our amorphous material windshields repaired.
The Schwarz rosin sounded very scratchy to me as well. You're not imagining it. It sounded just shockingly bad, except when played on steel strings, which is what Pirastro says it was made for.
Frankly, in 80 years of playing I never scored the surface of a rosin cake. But about a year ago, with my first cake of DEJA rosin, I could not get my bow hair to get any traction so I lightly scored the surface in a square grid. It turned out after that the rosin worked fine.
Andrew, And cracked rosin isn't dangerous either, nor will it lead to a citation by the highway patrol.
@Amrita, thank you! Maybe that explains it, as it is the rosin I use the most... I'll try to clean the bow and don't use the Pirastro. I have a Daddario light rosin (the cheap one) and Kaplan light... I guess they should do, although I did notice less grip on those maybe I need to apply more.
Damian, I've got the Kaplan light. For me, at least, it feels slippery. It doesn't draw as nice a sound as Hill light or Guillaume. It's OK, but just OK.
Bury a cake of rosin for a million years and it will turn to amber.