The Inside Thumb

It is a great thing when a Twinkler, after several weeks of pre-Twinkle games and exercises, and months of polishing the Twinkles, is ready to insert the thumb on the right hand into the little niche of the violin bow. Previously it had been on the underside of the bow to achieve good contact of bow hair to the violin strings.
Here is Colby's best new bow hold with the thumb inside!  Colby passed off his Twinkles in June.