From sketch to first prototype

We decided to use cardboard to build our first prototype of Trevor.

• Step 1 : We created the ovoid shape for the frame on a piece of paper.
• Step 2 : We cut this shape in a cardboard.
• Step 3 : We built the back wheels using cardboard too and fix them to the axis.
• Step 4 : We cut the frame to host the wheels and built the front wheel.
• Step 5 : We prepared axis binding.
• Step 6 : We tested our prototype. The wheels were too narrow.
• Step 7 : We enlarged the wheels.
• Step 8 : Our first prototype is ready.