Evolution
First Prototype
We started with a sketch, which was developed into our first proto type. We tested it on soil, and it turned up pretty decent - draw back was the wheel, - it was too small.
Second prototype
We tried to nail the drawbacks of our first proto, by increasing the wheel size, re-designing the handles, and main unit that holds the handle and wheels. It turned out to be more comfortable working model by now.
Final design
This is our offering, good build and finish. With a choice of wheels - either pneumatic rubber tyres or Solid MS flat wheel.