Newson Chair

I selected the Cappellini wood chair (1988) by Marc Newson to use for my parametric extensions.

Original Chair:


I began by drawing my end curves in Rhino and then by 2 rail sweeping the top and bottom curves to the side curves. I added 3 support curves in the seat, true to Newson’s design.  I also drew 4 additional curves in the center of the seat to reference for when I extend the seat curvature in grasshopper.

Rhino Model:


Next, I defined my design drivers and proceeded to grasshopper where I used sliders to manipulate the rib count and width, the length of the seat, and the curvature of seat.

Define Design Drivers:

Picture4 Picture5 Picture6

I got all of the drivers to run to the best of my ability at this point. The main thing I am still trying to figure out is how to attach driver 1 (Rib count and width) to the drivers 2 and 3.  This is probably something very simple….

Driver 1 Rib Count:


Driver 2: Rib Width


Driver 3: Seat Length


Driver 4: Seat Curvature



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