3D Metal Printer Senior Capstone @ UC Berkeley

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Imagine a 3D printer which prints full strength aluminum with the simplicity of existing plastic printers.

UC Berkeley Engineering seniors Rory Timar, Josh Stroud, and Andre Faroni tried to build a 3D metal printer for their senior capstone project in Spring '14.

To learn more, visit our project on the web at
http://3dmetalprinter.strikingly.com/

Published in: Engineering, Business, Technology
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  • Show IO on system block, photo of microcontroller connected to laptop
  • Show IO on system block, photo of microcontroller connected to laptop
  • 3D Metal Printer Senior Capstone @ UC Berkeley

    1. 1. Andre FaroniRory Timar Josh Stroud ME 102B Final Presentation: Building a 3D Metal Printer 4/29
    2. 2. Overview Design Process What + Why Overvie w Wrapup Q+A Goal: explore printing metal parts with welding Result: Lots of trial and error Here’s what we learned…
    3. 3. Why a 3D Metal Printer? Design Process What + Why Overvie w Wrapup Q+A ?
    4. 4. First Prototype Doesn’t Work What + WhyOverview Wrapup Q+A Design Process Focus on learning about + prototyping TIG welding circuitry Tackle the riskiest part first!
    5. 5. Iterating on Power Circuit Car Ignition Coil Factory HV Caps DIY Transformer to Spec Flyback Transforme r DIY Capacitor Salvaged Transforme r High Voltage Arc Ignition What + WhyOverview Wrapup Q+A Design Process
    6. 6. Iterating on Power Circuit HF Current Control ` Continuous Current Power Supply HV Capacitor “Zap” Array Jewelry Micro-Tig Welding Insight! What + WhyOverview Wrapup Q+A Design Process
    7. 7. Beefier Microcontroller Powers Closed-Loop Control What + WhyOverview Wrapup Q+A Design Process Arduino Uno 16 MHz ARM Cortex M-4 168 MHz HF Current Control PI current control Capacitor Charging P voltage control
    8. 8. Misadventures in Startup Land Free Ventures What + WhyOverview Wrapup Q+A Design Process We want this!
    9. 9. Final Prototype Overview Wrapup Q+A Design Process What + Why
    10. 10. System Overview What + WhyOverview Wrapup Q+A Design Process
    11. 11. System Operation Overview Wrapup Q+A Design Process What + Why 1 2 3
    12. 12. System Operation Design Process Overview Wrapup Q+AWhat + Why 1 2 3
    13. 13. System Operation Design Process Overview Wrapup Q+AWhat + Why 2 31
    14. 14. Microcontroller Control Design Process Overview Wrapup Q+AWhat + Why
    15. 15. Experimental Data Design Process Overview Wrapup Q+AWhat + Why
    16. 16. Lessons Learned • Know when to model, know when to build • Invention = SMART trial and error. Design Process What + WhyOverview Q+AWrapup
    17. 17. Wrapup Goal: a 3D metal printer for the masses Insight: Combine TIG welding practice with existing 3D printer tech Final Result: an experimental platform to test + tune our welding process Design Process What + WhyOverview Wrapup Q+A Biggest Lesson: Even when the work you set for yourself wasn’t finished, you’ve come too far to say it’s worth coming back
    18. 18. Timeline in Janurary Design Process What + WhyOverview Wrapup Q+A
    19. 19. Image sources Tig welder: http://cfnewsads.thomasnet.com/images/large/025/25335.jpg Microtig welder: http://www.millerwelds.com/education/articles/images/Fig.-7- Micro-TIG1lr.jpg Arduino: http://arduino.cc/en/pub/skins/arduinoWide_SSO/slider_home/h _01.jpg ARM: http://d3dpuk1s8nsuve.cloudfront.net/wp- content/uploads/2012/05/STM32-F0-microcontroller-series.jpg Thomas edison: http://2.bp.blogspot.com/-- wbqi2ucw14/UhoodohiWiI/AAAAAAABxOk/KxVcgjYLeiY/s320/E ntrepreneur%E2%80%99s+Curse.jpg
    20. 20. Misadventures in Startup Land Free Ventures What + WhyOverview Wrapup Q+A Design Process We want this!

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