Engineering Design 3 D Printing Camp Geoff Knowles

Engineering Design & 3 D Printing Camp Geoff Knowles Executive Director & Assoc. VCSA Crawfordsville, IN

Ivy Tech Community College 2325 Phil Ward Blvd. Crawfordsville, IN 47906

Engineering Design & 3 D Printing Camp • • • 5 day summer camp (half-day, 1 week) Middle school & high school students participated Taught by Ivy Tech Faculty & a HS Technology Teacher Afternoon extra session for students to build a 3 D printer Expose students to innovative technology increasing their interest and awareness of educational opportunities and career pathways

Participants (2016) • Majority of students going into grade 9 or 10 • Students 71% male, 29% female • 29% Latino, 5% African-American, 9. 5% Asian, 42. 5% White • Majority of students part of First Century Scholars program in Indiana (parents not college graduates) • College attainment rate for Indiana 33. 2%, 38. 1% nationally, and 25. 3% in rural Montgomery County, Indiana (Lumina Foundation, 2012)

Free object designs online • thingiverse, pinshape, etc. • Students were allowed to print one design they downloaded on the first day

Design Challenge • Students learned about the engineering design process • Students were given a “design challenge” – an earbud holder this year • Students given time to work on other designs as well if they finished this project

Students learned about 3 D printing, the process, materials, & types of 3 D printers/technologies • • Stereolithography(SLA) Digital Light Processing(DLP) Fused deposition modeling (FDM) Selective Laser Sintering (SLS) Selective laser melting (SLM) Electronic Beam Melting (EBM) Laminated object manufacturing (LOM) • Stereolithography (SLA)

Fused deposition modeling (FDM) • The printer builds objects layer by layer from the very bottom up by heating and extruding thermoplastic filament. • Special software “cuts” the CAD model into layers and calculates the way printer’s extruder would build each layer. • The printer can extrude support materials as well. • The printer heats thermoplastic until its melting point and extrudes it through a nozzle on to a base, that is also called a build platform or a table • A computer translates the dimensions of an object into X, Y and Z coordinates and controls that the nozzle and the base to follow a calculated path during printing https: //youtu. be/4 I_18 xp 7 LT 0 http: //3 dprintingfromscratch. com/common/types-of-3 d-printers-or-3 d-printing-technologies-overview/ Credits: 3 DMT

Students learned about Autodesk Inventor and Solidworks as well as other parametric modeling software to design projects • Free download for students/educators for Autodesk Inventor • Free web-based parametric modeling software: On. Shape, Google Sketchup, Tinker. CAD, Sculptris, and others • Some software is downloadable and others are web-based

Students learned about how 3 D printing and scanning is used in industry from guest speakers • Eric Lynch, Frontier Additive Manufacturing, Crawfordsville, IN • JD Schaumberg, Online Resources, Inc. , Lebanon, IN

3 D Scanning

Students learned about 3 D scanning has multiple applications • Maybe a bigger industry than 3 D printing in the future • Quality control in manufacturing • Compliance with specifications such as Indy Race Cars, etc. • Scanning parts or objects to reproduce/reverse engineer • Archiving artifacts JD Schaumberg, Online Resources, Inc.

3 D Printer Building Session

3 D Printer Building • Students followed along with step by step instructions using an example built by the teacher • All the parts were ordered, printed, or cut (wood) ahead of time and organized into a kit for students • Students asked to bring a laptop to install printer software to run the printer • Firmware also installed on the printer board and setup of the printer • Printers tested before student took them home.

S-STEM Survey Summary Friday Institute for Educational Innovation, S-STEM Survey (2012). Student Attitudes Toward STEM (S-STEM). Raleigh, NC: North Carolina State University. • • • Subscale mean scores for interest and confidence in learning STEM subjects (Likert scale 1 -5): Math 3. 77, Science 3. 23, Engineering & Technology 3. 77 On career interest subscale, the highest interest was in a math related career (accountant, economist, financial analyst, statistician, applied math, etc. ), medicine, or engineering/technician Majority plan on going to college, only 15% noted community college first Top Career Choices: medicine, engineering, business management, performing arts, aviation, music education, computer science, psychiatry, computer graphics, science, technology 20% of students involved in a robotics club at school When asked about knowing adults working in STEM fields, all 4 areas were well represented (engineering and math highest)

Thank You • J. Geoff Knowles • jknowles 5@ivytech. edu • 765 -269 -5681