Discussion

Testing and Future Goals:

When testing our product, we had some trouble with the movement of our rack. At first, we designed a cardboard rack-holder and then realized that it would be easier to add one skewer above the rack and another skewer on the bottom of the rack to keep it stable. This kept the rack in place while the gear moved the rack across the board. We also had to test different sponges to see which sponge material would work best to absorb the most dirt and cleaning spray. After several attempts, we learned that using the soft side of the sponge, rather than the rough end, works best for absorption of dirt and cleaning solution.

This project was done on a minimal scale. When marketed it would be executed on a much larger scale. All the materials used for this product would have to be larger and stronger. For example, there would need to be a change in the size of the motor. The stepper motor in our lab is powerful, but it is meant to be used for small items. The sponge-rod would also need to be made of a metal, rather than a skewer, in order to create more contact with the surface of the board.

Reviewer Feedback:

1) Figuring out how to design and 3D print the rack and gear was a long process and took a lot of trial and error. We would like to find a more efficient way of making or buying the the rack and gear.

2) As a teacher suggested, using a stronger motor that would move the gear more smoothly across the rack would be more helpful.

3) Teachers advised that a metal rod should be used for our sponge so the sponge will be more stable and there will be more pressure against the board.

After seeing our prototype, teachers and students were excited about the product and expressed interest in purchasing the item when made to scale. Our product has true potential, and people see real benefit from it. With investment and time, we see a real market for our prouct. Our product could be sold at a resonable price, so schools, colleges, and even offices would be interested in buying it in bulk.