Fiona’s Bow

1. Fiona’s Bow

2. Design Team Fahad Al-Subaiei Matt Joganic Harvest Montemayor Samuel Zerbib

3. Karin Hallberg The Client NAU professor Instructor of music education Extensive experience teaching and performing Member of Flagstaff Symphony She wants a custom violin bow attachment for a special student

4. Secondary Client Fiona Carroll Skilled 13 year old violinist Under Karin’s instruction for 10 years Born with a cleft hand that has only two digits

5. Create a bow attachment • Must fit hand with just two • digits • Unlimited movement • Maintain bow balance • Advanced bow techniques Problem Definition

6. Project Overview Many previous attempts have been made to facilitate bowing All previous models lack a custom feel Inconspicuous design Light weight Comfortable Non-slip Perfect fit

7. Phase 1 Research and Project Idea Development October 5th to November 2nd 2010 Obtain pertinent information a) About Fiona Her condition b) Violin bow Techniques c) Previous attachment attempts Deliverables: Comprehensive research Mold and x-ray analysis report

8. Phase 2 Design Development based on Research November 2nd to November 18th 2010 Develop list of solutions to problem a) Extensive brainstorming b) Materials research b) Narrow solutions to three main ideas Deliverables: List of top 3 ideas with accompanying sketches and supporting reasons

9. Phase 3 Expert Review November 18th to December 2nd 2010 Take ideas to experts a) Bow maker Jeff Robinson b) Karin Hallberg Deliverables: Final selected design based on review complete with detailed sketches

10. Phase 4 Prototyping and Testing December 2nd 2010 to February 24th 2011 Prototyping a) Create prototypes b) Present to Fiona for testing c) Improve and repeat Deliverables: Final design as selected by Fiona

11. Phase 5 Design Analysis February 24th to March 10th 2011 Review by technical advisors Dr. Nelson Dr. Feigenbaum a) Quantitative description of design b) Mechanical and physical properties c) Implement to final design Deliverables: Analysis of design and report Bill of Materials

12. Phase 6 Construction of Final Product March 10th to April 7th 2011 Construct of final design a) Purchase materials for building b) Construct bow with attachment Deliverables: Final Presentation Finished Product

13. Current Research Classification of condition Gain better understanding of range of motion and muscle strength Congenital Very rare Especially on just one hand Both hands would be genetic Ectrodactyly type Ectro- absence of Dactyly- arrangement of digits Missing 4 central metacarpals and the 5th proximal phalanx

14. Current Research Violin Bowing Techniques Current configuration inhibits movement Karen would like to see improvement with certain bow strokes: Depend on balance point Spiccato-bow bounces on strings Certain Techniques require powerful strokes Martele-power/hammer stroke

15. Conclusion Fiona needs a new bow attachment to replace her current model The real challenge : Although this project may seem easy at first… Difficult to communicate with Fiona because she is shy… The product must be to her express liking…

16. Questions ?