NCAAL presentation of Marin City Library's 3D Printed Rubber Band Car Design Contest. Link to time lapse video: https://youtu.be/zh_dy55RzUU

1. 3D PRINTED RUBBER BAND CAR DESIGN CONTEST
MARIN CITY LIBRARY’S

2. 3D PRINTED RUBBER BAND CAR DESIGN CONTEST
MARIN CITY LIBRARY’S
ETIENNE DOUGLAS
WEBSTSTAR COORDINATOR
EDOUGLAS@MARINCOUNTY.ORG
DIANA LOPEZ
LIBRARIAN
DLOPEZ@MARINCOUNTY.ORG
415-332-6158

3. MARIN CITY, CA

4. MARIN CITY, CA
LOCATED IN MARIN COUNTY, CA
MARIN COUNTY HAS THE 17TH HIGHEST INCOME IN THE US
*3RD HIGHEST PER CAPITA
INTERESTING FACTS:
Population: 2666
•Populated in 1942 by African-Americans as
shipyard laborers during WWII
•38.9% White, 38.1% Black, 10.8% Asian, 13.7%
Hispanic or Latino
•2Pac lived here when he attended high school
•George Duke was born and raised in Marin City
•Houses most of the low-income residents in Marin
County

5. WHAT IS 3D PRINTING?
3D PRINTING OR ADDITIVE MANUFACTURING IS A
PROCESS OF MAKING THREE DIMENSIONAL SOLID
OBJECTS FROM A DIGITAL FILE. THE CREATION
OF A 3D PRINTED OBJECT IS ACHIEVED USING
ADDITIVE PROCESSES. IN AN ADDITIVE PROCESS
AN OBJECT IS CREATED BY LAYING DOWN
SUCCESSIVE LAYERS OF MATERIAL UNTIL THE
ENTIRE OBJECT IS CREATED. EACH OF THESE
LAYERS CAN BE SEEN AS A THINLY SLICED
HORIZONTAL CROSS-SECTION OF THE EVENTUAL
OBJECT.

6. WHAT IS 3D PRINTING?

7. WHAT IS 3D PRINTING?

8. 3D PRINTING PROGRAM GOALS
LIBRARY GOALS:
•PROVIDE ACCESS TO EMERGING TECHNOLOGIES TO AN
UNDERREPRESENTED COMMUNITY WITH THE GOAL OF SPARKING AN
INTEREST IN STEAM (SCIENCE, TECHNOLOGY, ENGINEERING, AND MATH)
FIELDS AND INCREASING THE DIVERSITY IN STEAM PROFESSIONS FOR
FUTURE GENERATIONS
LEARNING OUTCOMES INCLUDE:
•LEARN HANDS-ON COMPUTER AIDED DESIGN SKILLS FROM IDEA TO
DIGITAL MODEL TO PHYSICAL FABRICATION
•USE PROBLEM SOLVING SKILLS TO TROUBLESHOOT AND IMPROVE
DESIGNS
•USE MATH SKILLS TO CALCULATE MEASUREMENT

9. THE CONTEST
GOAL:
DESIGN A 3D PRINTED RUBBER BAND POWERED CAR AND COMPETE IN A
RACE FOR DISTANCE
RULES:
•CAR MUST BE DESIGNED BY THE PARTICIPANT (NO DOWNLOADING OF
SOMEONE ELSE’S DESIGN)
•MUST NOT BE OVER 120MM
•CAN ADD TO CAR FOR WEIGHT AND TRACTION
•PARTICIPANTS GET 5 TURNS
•SCORE IS DETERMINED BY AN AVERAGE OF THEIR 5 TURNS

10. THE PARTICIPANTS
•LOANED OUT CHROMEBOOKS TO LOCAL STUDENTS DURING THE SUMMER
•WORKED WITH MARTIN LUTHER KING/BAYSIDE SCHOOL TO IDENTIFY
STUDENTS
•STUDENTS IDENTIFIED WERE TOP STUDENTS AT THE SCHOOL

11. DESIGNING
USED TINKERCAD.COM TO TEACH THE BASICS OF 3D DESIGN

12. DESIGNING

13. DESIGNING

14. DESIGNING

15. DESIGNING

16. DESIGNING

17. DESIGNING

18. DESIGNING

19. CONTEST RUNNING

20. WINNERS

21. RESULTS
•KIDS WERE ENGAGED
•ENJOYED DESIGNING
•WANTED TO DO AGAIN
•ASKED WHAT ELSE COULD BE DONE ON THE
3D PRINTER

22. 3D PRINTED RUBBER BAND CAR DESIGN CONTEST
MARIN CITY LIBRARY’S
ETIENNE DOUGLAS
WEBSTSTAR COORDINATOR
EDOUGLAS@MARINCOUNTY.ORG
DIANA LOPEZ
LIBRARIAN
DLOPEZ@MARINCOUNTY.ORG
415-332-6158