Bow Technique for That Sweet, Sonorous Violin Sound in The Fingerboard Posted December 19, 2017 · Report reply There are only 4 variable. 1. Bow Speed, 2. Bow Pressure 3. Sounding point (where on the string the bow makes contact) 4. How much hair is in contact with the string - bow angle as held in the hand. Of course this assumes you have mastered pulling a relatively straight bow, and are not doing anything dumb with rosin (don't over rosin, just as much as you need - I only rosin up every few times I play, a little more as my hair wears out), and have serviceable hair on the stick - a cake of rosin will last years and years. I've never come close to using one us - it goes old well before that happens - and I play a lot. Play with these variables until you get the best sound possible. The one bit of advice or visualization tool that did it for me was a concept, when pulling or pushing the bow, best described as the feeling of 'pulling taffy' - to feel a smooth but constant resistance. Practice pulling the bow closer and closer to the bridge, listening to how it affects the sound - it gets more focused, but there is a point where it becomes harsh, you want to to that limit to get the best projections, but back off for warmth and a fluffier tone. You cannot play 'lazy' and have a great tone, you must always be 'working the sound - constantly adjusting these variable, but you can have such a pallet of colors to use once you get the hang of it, only the human voice is more expressive.