Usually, if you can't hear any sound from your bow, it's because:
1. Your strings are coated. (Such as Elixir etc.) As explained on our website, coated strings are not suitable, unfortunately.
Because the bow can't get enough grip on the strings, to check if your strings are coated, enter the brand model on www.sweetwater.com and check it on the specs chart.
2. You need to apply more rosin to the bow; please repeat the steps on the user guide, Minute 0:17
3. The bow hair has soaked some of the natural oil from your hands and prevents the rosin from sticking to it. Take a paper towel and some pure alcohol and clean the bow hair with it. Let it dry and then apply the rosin again.
Do I need to use the sandpaper each time before playing the bow?
In general, you only need to scratch the rosin surface once. But in case needed, when you see that the rosin doesn't sticks to the bow well, you can scratch it again. But, you do need to apply rosin on the bow each time before playing with it.
I can't get a clean sounds out of the bow.
In that case, you need to apply soft pressure on the bow with consistent movements, as seen on "the basics" chapter.
If you have any questions please feel free to contact us anytime, we will do our best to answer your questions within 12 hours, during our working hours.