Prototypes

The Image below is what I want my final design to look like once the dxf files have been worked out.

There will be more radius on all the edges and it will be cut into 25 pieces of 18mm exterior grade ply

Below is my first attempt at a prototype. The scale is 1:5 so you can imagine its a little small, but the scaled size and dimensions are perfect.

DXF Files - Beginning

DXF file tries

Final DXF file that I satisfied on. Will get this laser cut and try prototypes out for size and work out my errors.

Final Concept Developement

 had to work out a system that would allow me to use to support the rubber while it was in tension, coupled with the added weight it would need to support once the user sat on it.

 with help, worked out several cuts of plywood (exterior grade 18mm) would satisfy the strength requirement and work out very well. From here I need to work on a dxf file for a cnc router.

1:1 Scale Drawings

Scaled 1:1 drawing I did of the chair. Will use this as the basis for designing the feature.

Dimensions are 350x450x450mm

Final Concept (Rendered)

FINAL CONCEPT

 Concept drawings for the final design

Final Concepts

Couldn't decide on my top 3, so I went with the four that I thought were the best ideas out of them all in terms of stackability and the ability the design had to fully functionalise the rubber strips that I'm using.

The idea behind these is to use either a metal or a wooden frame (sourced from reclaimed materials - not sure yet....might have to cut and bend myself) and use the rubber natural flex to create a flexible, comfortable piece of padding to sit on. The frame will suspend the rubber between it and it will be adhesived on to provide quite a bit of tension, allowing the sitter to enjoy an extremely comfortable seat with just a touch of spring.