Tumari is the maker of hand-crafted custom bows for clients since 1993, including professional musicians and collectors. Learning advanced techniques from master bow makers in the field, such as Mr. Thomas Gerbeth in Vienna, Austria.

Tumari collaborates with clients to cater to their specific needs and preferences in terms of performance and aesthetics whilst maintaining a high level of quality control and consistency in all aspects of the bow-making process.

Tumari consistently attends trade shows and other industry events to stay current on trends, and best practices of bow making. 

Owner of Sharon Violin Shop (founded in 1988) based in Santa Monica, CA, where he also performs bow re-hairs, and is a repair specialist in performing deflection repair, camber correction, broken bow head and broken mortice repair. Tumari also innovated a special instrument that he developed with his own procedure to re-hair bows.