Tests don't last so make new ones fast

As a group we decided to build an arm that would hold several pens to draw at once from the same gecode file. It would allow us to experiment with different pens, pencils and brushes drawing the same image at the same time. Above is Leti's sketch of the early ideas for the arm and the pen holder. This is a sketch from Dallas about how the fillable brush could work. We worked together to come up with some ideas for how it would all attached together and what modifications needed to be made to adapt to different types of tools, such as continuously filled brushes. What I quickly realized was that for something like this rapid prototyping would be very important. I've had experience with "cheese board" mounting plates in my photography career and their versatility seemed quite fitting for this project. I decided that if the arm was made from a metal peg board it metal prototyping could be quick and easy but also the project would be very flexible. 3 pens? 4 pens? 5 pe...