The prototype was to simulate metal as the intended material for manufacture.
I wanted to enter, but with a humorous play on words at the centre of my design. The Porkupine would sit on a table, as roast pigs did in the past (sans the apple). The quills of the Porkupine would be made out of rolled up napkins/serviettes, similar to the quills you may have seen in the Porkupines cousin, the porcupine.
This instructable is an interesting set of steps showing how I got to the final form, as well as how I simulated the finish of cast alluminium, using corrugated cardboard, and automotive body filler.
It illustrates that corrugated cardboard can be used as an effective model-making and prototyping material.
Step 1: Maquette made from clay
I made several maquettes before setting my mind on this one.
You can see the size of this to be approximately 50mm long (2 inches). I photographed the model from the front and top, and scaled up the images on the computer. I then printed these out, and began laminating many layers of corrugated cardboard.
I used double-fluted cardboard which was approximately 8mm thick. I glued layer upon layer to create a solid 'block' of cardboard about 15cm thick (6 inches).