Final Concept : The X-Craft [X-board + Papercraft]

Preliminary sketches leading to concept development.

Few rough estimates on the compressive strength of a 20 x 50 rectangle.

Photograph of the prototype: Front

Photograph of the prototype: Side

Photograph of the prototype: Rear

From this viewing angle we can appreciate the void below the seat which gives a sense of gravity defying, specially when made using a cardboard based material.

Photograph of the protoype: isometric

The flat pattern developped from the 3D modelling.

Fitting the whole chair on just one pattern (which give it the maximum possible strength and lateral stability) was the most challenging part. This temporary pattern does not contain any locking system yet.

3D modelling : Loads of trial and error involved to get the form right

The 1st prototype : just the seat

Based on my first prototype, i further developed it to make the legs and strengthen the back rest using papercrafting method that i'm very familiar with. That's where the name of X-craft came from X board and paperCRAFT.

Using this technique i managed to create a very complex mid-sized chair with a significantly strong back rest, by making the best out the tesseations and the strength of Xanita board, i'm confident that the chair will be strong and stable to easily hold the 150kgs.

At this stage of prototyping, the flat pattern (which is only made up of 1 major part) will be using the whole width of 1830mm of the X-board.

The model (scale 1:5) was fixed using tape, because i have not devised the joints that i'll be using in that complex structure.

The next model will be a full size working prototype.