The challenge: For my senior thesis, I chose to solve the pain points associated with a yoga ball used as an office chair
- ergonomic, good for your back
- functional features, like height adjustment and wheels
- strong industrial design
- affordable (less than $100 market price -> ~$25 manufacturing cost at scale)
What I did: Needfinding, paper prototypes, machined prototype, manufacturing plan, user testing
The result: After a few iterations (and slightly dangerous prototypes), I came up with this design:
- an air-filled Bosu ball, which could have its firmness adjusted to fit the user
- a five-wheel base for stability with color-coordinated wheels to match the Bosu ball
- a lever to adjust the height of the stool
- available in a variety of colors
- manufacturing cost: approx. $35, including parts, labor, warranty, and freight shipping
When: Spring 2009
Duration: 1 quarter
Below, you can review the final prototype and a few drawings created in Solidworks.
During the design process, I was focused on my users, via continuous testing and redesign of the stool. Here are the highlights from the feedback for the final design.