I find this thread to be very fascinating!
Would you please be able to explain how to achieve the axis of rotation on the various picture you've posted? Grip and release? I'm understanding the smooth/rough side but I can't seem to wrap my head around how to actually grip and release the ball to get the movement.
Would you please be able to explain how to achieve the axis of rotation on the various picture you've posted? Grip and release? I'm understanding the smooth/rough side but I can't seem to wrap my head around how to actually grip and release the ball to get the movement.