1. The ultimate marble track – Toys R’ not US
Alex Arbogast, James Hegedus, Alex Seagle, Bryce Berryman
EF 152 Spring, 2017
Team E-05
April 4, 2017

2. Customer Requirements & product selection
Desired audience are children ages 7 to 10.
This was the most unique product idea we came up with. We chose to create this product so that children could have the opportunity to assemble a marble roller coaster and design a unique track to the extent of their imagination. 

3. Conceptual Design
This design arose from sketching our idea of a marble track. We wanted to create a design that had a working conveyor belt so that the roller coaster would work continuously. 
Subsequent design iterations altered the base of the toy and fleshed out the conveyor belt.

4. Actual Model Life Size CAD Model What did we build?
A 1’ : ¼” scaled model of our toy
Why we built it?
So we wouldn’t have to use the workshop as much as the other groups.
We can use the model to give the general outline of our toy, where the CAD design would show the details.
How we built it?
We laser cut the central support, the base, and the conveyor belt flaps. We used straws for the PVC track, a rubber band for the conveyor belt, an we 3D printed the marble catcher. 
All the pieces are attached to each other using wood glue and super glue.

5. Additional Pictures

6. The ultimate marble roller coaster Marketing Video

7. Feedback
Our customers thought the idea was cool for six year olds.
Bryce's little brother said he would play with the toy.
Alex's little brother said he would definitely buy the toy. 
Results
In our CAD model we were able to successfully make the crankshaft, which will drive the conveyor belt, rotate between the bearings. 

8. Cost and Time Estimates
The model materials cost was $36.72 or $14.40 per model.
The materials for 1000 units would cost $27,670
We would ask $ for one toy.
Designing the toy and building the toy model took 41 man-hours of work. Much of this time was spent on the CAD design.

9. Summary
Through the engineering design process, we created a toy that challenges its users to build a path for a marble to reach a catcher.
This toy enables critical thinking skills in children and forces them to construct a marble coaster using building skills and their imagination.