GRABCAD MEETUP 09.21.2016

DIGITAL FABRICATION AND THE QUEST FOR MAKER MASTERYLeveraging digital tools to improve the process of iterative concept development

Tasker SmithTechnical InstructorPappalardo Undergraduate LaboratoryMassachusetts Institute of Technology

CLASSES 2.670 Mechanical Engineering 2.007 Intro to Design and Manufacturing 2.009 Product Engineering Process

WTP Women in TechnologyDiscover Mechanical Engineering

1% 2% 3%

5%5%

6%

32%

17%

1%2%

3%

23%

MECHANICAL ENGINEERING(Slice of undergraduate population)

Nuclear Science (Course 22)

Civil (Course 1)

Material Science (Course 3)

Aero / Astro (Course 16)

Biological (Course 20)

Chemical (Course 10)

EE + Computer (Course 6)

Mech E (Course 2)

550 Students

17% of total undergraduate population

School of Engineering

School of Architecture

School of Management

School of Humani�es

School of Science

MIT

CLASS 3 MACHINE TOOLS

CLASS 4 MACHINE TOOLS

CLASS 5

CLASS 5

0 1 2 3 4 5 STORAGE

MEETING ROOMSDEVICE CLASSES

+

ACTIVE SHOP SPACE 6800 sq ftMEETING SPACE 2200 sq ftSTORAGE SPACE 500 sq ft

PAPPALARDO LAB

3DPLaser

WaterjetCNC

3D Scanner

CNC Wire Bender

Vinyl Cutter

CNC Embroidery

TOOL PROFICIENCIES

Mockup Proficiency

Sheet Metal Fabrication Proficiency

Hand FabricationProficiency

Machine Tool Proficiency

Power Tool Proficiency

Digital Fabrication Proficiency

PRACTICE: CONCEPT DEVELOPMENT

Embodiment

Refinements

Models

Sketches

Ideas

1 1 2 3

PROLIFIC ITERATION

TEACHING AIDS

3DP FUNDAMENTALSHow our 3D Printer worksŸ PrecisionŸ Feature ThicknessŸ Material PropertiesŸ Core Densitiy

3DP BEST PRACTICESApplied use of 3D Printed partsŸ Screw bossesŸ Snap fitsŸ Living hingesŸ Post processing

3DP: SOURCING CAD DATA

SOURCING CAD DATA3D Repositories: user populatedŸ GrabCAD !!Ÿ Thingiverse (Makerbot)Ÿ Youmagine (Ultimaker)Ÿ 3D Content Central (SolidWorks)

3D Repositories: vendor populatedŸ McMaster CarrŸ Carr Lane

CAD Software LibrariesŸ SolidWorks Design LibraryŸ Autodesk Fusion 360 Design Library

25 TOOTH SPUR GEARSourced, 3D Printed, installed and tested in under 1 hour

3DP: MAKE THE IMPOSSIBLE

NAINA MEHTA (MIT ‘15)

Demonstrating her prototype of a rope climbing robot.

Complexity of fabricated gear / nut assembly is resolved through multiple iterations on a Stratasys uPrint.

TIPS & TRICKS: ONLINE TOOLS

WWW.MAKERCASE.COM

LASER SPECIFICATIONS

Plywood kerf = .003”Acrylic kerf = .004”

TIPS & TRICKS: FLEXURES

LASER CUT FLEXURE 3D PRINTED FLEXURE