Hunmin KohRESEARCH INTERST

• Digital Fabrication of Fabrication Tools• Parametric Modeling and Generative Algorithms• Programmable Matters

EDUCATION

• SMarchS - Design and Computation 2015-Massachusetts Institute of Technology, Cambridge, MA

• BS in Mechanical Engineering 2004-2009 Korea Advanced Institute of Science and Technology, Daejeon, Republic of Korea

ADDITIONAL EDUCATION

• Urban Design, Career Discovery 2012 Harvard Graduate School of Design, Cambridge, MA

• Fab Academy 2012 Fab Lab Barcelona, Barcelona, Spain

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WORK EXPERIENCE

DRB International Jan 2015 - PresentSeoul, South KoreaFab Lab Project Manager

Velociraptor Lab Aug 2013 - Dec 2014Seoul, South KoreaRepresentative • Makerspace Setup and Consulting• Collaborative projects and workshops• Opensource Hardware Projects

TIDE Institute Aug 2012 – Jul 2013Seoul, South KoreaResearcher• Co-founded Fab Lab Seoul

Korea International Cooperation Agency Mar 2009 – Sep 2012Matara, Sri Lanka International Cooperation Personnel • Executor of a Computer Lab at Refurbishment Project.

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SKILLS

• Fabrication: CNC routing, CNC milling, laser cutting, 3D printing(FDM), molding and casting, arc welding, manual lathe and milling

• CAD Software: Solidworks, Rhino 3D, Grasshopper, AutoCAD• Embedded Systems: Atmel AVR, Arduino; CadSoft Eagle PCB Design• Programming Languages: C++, Java, Python• Language : Fluent English, Intermediate Sinhalese and Spanish

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Spheremill

Opensource Spherical Coordinate CNC Milling Machine

2014

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Spherical forms in nature(from left) Structure of icosahedral cowpea mosaic virus, Allium hollandicum flowers, ball of mackerel, Earth

'Nature is an infinite sphere whose center is everywhere and whose circumference is nowhere.’

-Blaise Pascal

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Spheres or spherical forms in digital fabrication can only be approximated with Cartesian coordinate system.

However, currently available options for spherical coordinate digital fabrication is either limited or too expensive.

(top left) Distinct layers of a 3D printed sphere l (top right) Press-fit assembled snub dodecahedron(bottom left) Egg-Bot ($195)(bottom right) 5 axis Shopbot ($39,950)

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Inspired by Center for Bits and Atoms’ Machines that Make project,

the machine is designed to be an affordable alternative to a process that was available with the 5 axis CNC mill.

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(from left)-CNC milling of HDPE chassis -Belt drive mechanism of polar angle θ-Modularized azimuthal component

Spheremill

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(left) Machine view from the top (right) Preparing the sphere stock

Spheremill

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By designing a mechanism that is coherent with the

geometry, the process becomes open to the possibility

of new types of fabricated objects and applications.

• Material Cost : $1500

• Maximum Stock Diameter : 550mm

• Spindle : 400W brushless DC motor

• Processable Materials :

rigid foam, acrylic, wood (to be tested)

(top) Test drive result

(middle) SRTM(Shuttle Radar Topography Mission) Depth map of North and South America and its full 3D milling result

(bottom) Possible future implication

Very Large Delta Printer

2013

[Crystallograpie]

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Despite the growing hype on 3D printers, there hadn’t

been many attempts to focus on the aesthetics of the

machine itself.

As collaboration with a designer(Hyun Park) and an

architect(Kate Cho), the goal was to reinterpret a delta-

type 3D printer as an exhibitable objet as well as to exhibit

the on-site 3D printing of crystal-lattice-inspired artifacts

which symbolized the gradual growth of crystals.

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(left) Newly developed double platform minimizes filament friction in the tube due to large size of the machine

(right) 3D printed joints combined with steel rod give structural integrity

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(left) First exhibition at Kunsthalle Platoon, Seoul

(right) The machine displayed in National Museum of Modern and Contemporary Artwith audience-generated artifacts (independent exhibition by Hyun Park)

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3D printed audience-generated vases from VLDP

(Grasshopper algorithm was developed exclusively by Hyun Park for the exhibition in National Museum of Modern and Contemporary Art )

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Standard Desk2014

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The design goal was to create a robust desk with a timeless design that can be also used as an introductory example for beginners.

The Standard Desk is a simple and robust desk that can be made from a single sheet of plywood. Although there are many creative digital designs available for CNC milling furniture, these designs sometimes require too much material or may only be suitable for specific uses.

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Different 2.5D milling techniques were incorporated together to maximize knowledge acquisition during the fabrication process.

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The project was sponsored by Gwacheon National Science Museum and it is now being used as a tutorial for a CNC milling class.

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3D Printed Modular Prosthetic Hand 2015

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From February 12th to March 11th, I worked as a visiting prosthetics engineer for ROW 3D, a non-profit organization based in Amman, Jordan.

My mission was to design a prosthetic hand for a 12-year-old Syrian child who lost two legs, three of his fingers on his left hand, and half of a thumb, resulting from a barrel bomb.

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Based on the finger design of the Flexi-Hand, I devised a modularized system where flexible filament is used to connect each part of the hand. This not only reduced the printing time and risk of failure while printing, it also improved actual fitting experience with the patients.

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Although the actual improvement of the grip force was less than expected since the patient was fairly accustomed to handling objects with his remaining two fingers, there was substantial improvement in holding and catching of objects.

Fitting usually cost the technician another week to redesign and print the hand once again if it didn't fit. Also, having a simplified BOM using single source material is hugely important in limited resource settings such as the Zaatari Refugee Camp.

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After coming back to Korea, I produced a demo mechatronic hand for the Royal Jordanian Medical Service(RMS) Prosthetics Center in Amman, based on a modified version of the Flexi-hand from a South Korean volunteer group 'FunMove'.

Instead of using a myoelectric sensor which requires disposable electrodes, this version uses a FSR(force sensitive resistor) for better maintainability under demonstration uses. Sung-yeop Kim of CampusD helped with actual CAD work and fabrication.

Video Link

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By David Quayola

Captives

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'Captives' is a sculpture series by London based artist Davide Quayola.

For his group exhibition in Seoul, Quayola wanted to fabricate the two 2-meter high sculptures (B01,B05) out of High Density EPS(Expended Polystyrene) locally in South Korea. The only way to materialize the complex shape of the sculpture was by using a 7-axis robotic milling technique.

Since the robotic milling of the sculpture of this size was unprecedented in South Korea, everything from material sourcing to tool selection had to be learned from scratch. The sculpture was exhibited to the public at 'Peaceminusone' exhibition from June 9 to August 23, 2015 at the Seoul Museum of Art

Robot Operation and Pre-fabrication Setup : DRB FatecTool Path Generation : DelCam Korea Overall Project Management : CampusD (Hunmin Koh)

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(left) Stacking four 1800mm x 900mm x 600mm EPS blocks using a hoist crane(center) B01 during the finish cutting (right) Finished B01

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(left) B05 after rough cutting(center) B05 after finish cutting(right) Some 2.5D contours were left ‘unfinished’ intentionally during the fabrication

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(left) Poster from ‘Peaceminusone’ exhibition(right) Sculptures at the exhibition space

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Fab Academy Barcelona

Selected works from my first encounter with digital fabrication

Press-fit construction kit inspired by Castell (Catalan human tower)

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(left) Salvaged wood from street (center, right) A laser cut lamp inspired by human rib cage

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(left) Typical recycle bins in Barcelona(center) Salvaged soda boxes(right) Soda box recycle bin for FabLab Barcelona

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(left) Layer rocker chair (based on Jens Dyvik’s open design)(center top) 3D scanned and printed artichoke(center bottom) DIY Arduino controller for network robot control (bottom) Tele-operated robot arm and the controller

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Matara Technical College Computer Lab Refurbishment Project 2011

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Matara

Matara Technical College is one of the main public vocational training

institutes in Sri Lanka. Located in a Southernmost town of Matara, approximately

180 students from 12 different courses receive training to join the future Sri

Lankan workforce. It also serves a vital role as a center for Information

Technology and Computer (ITC) education for the majority of its students, and it

is the one and only center where they can learn ITC despite having a low income.

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However, the school's educational environment had insufficient equipment and outdated systems to carry out the mission to train Sri

Lanka’s future engineers. The TC’s computer lab was equipped with few, outdated, low-quality computers. The school’s internet connection

had long gone out of order, and the safety conditions at the lab were in a poor condition.

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To improve the school’s educational environment, 14

used computers were donated by the Korean Ministry of

Labor and 22 new computers by KOICA. The network

connection was rearranged and reinforced to provide better

internet connectivity, and broken chairs and desks were fixed

and replaced with new furniture to solve safety issues.

Disorganized wires were reorganized into cases for improved

maintenance and safety.

In addition, the project site was divided in two

compartments to provide optimized energy savings. A student

lounge was created for students who wanted to use

computers after classes, and new lecture spaces were

constructed.

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To draw participation and generate ownership from beneficiaries, much of the work could be done with the help of staff and

students at the Technical College. Furthermore, many of the previous resources were refurnished and reused to maximize the budget

allocation and to address further environmental concerns.

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Boston University Center for Convergence The Final Project for Harvard GSD Career Discovery Program 2012

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During the summer of 2012, I took a course on urban design from the Career Discovery Program at the Harvard Graduate School of

Design. The objective of the final project was to analyze the drawbacks of the Fenway area in Boston and to establish an urban development

plan to solve the problem.

The Fenway area struggles with a drastic fluctuation in vibrancy because the area is closely linked with Red Sox games. The area is thronged with people when there is a game. But when there is no game, its empty street and stores has the most decayed mood.

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Although it is surrounded by the many academic institutions with more than 60,000 students, the discontinuity in the cityscape produced

by the Mass Turnpike severs the neighborhood in two, isolating the students of the Boston University from the Fenway.

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The intervention I proposed was to build a structure that covers the turnpike which thus connects the Kenmore with the Fenway.

By weaving the divided parts of the city into one piece, the city can expect to introduce the liveliness of Kenmore Square and contribute

positively to the fabric of the city. Additionally, a strong program to attract the students from the surrounding colleges was required.

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The Final proposal is a triangular-shaped multifunctional complex for

Boston University which includes a conference hall, offices for student

entrepreneurs, restaurants, and a fab lab.

The complex stretches over Mass Turnpike and connects BU’s

Charles River Campus and South Campus. This would increase

connectivity within the campus and be expected to induce more students

from surrounding institutions.

By carefully selecting the programs, the complex would provide

potential ground for year-round activities.

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FabLab Seoul

2013

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Being a co-founder and director of FabLab Seoul, I had successfully led and accomplished fundraising and team

recruitment. For lab management, a basic educational curriculum and guidelines were formulated from my fab academy

experience.

Fab Lab Seoul began in March 2013 as an affiliate of a non-profit organization with start-up assistance. It started with

a crowd-funding project for its laser cutter, which it claimed was the first fully pledged digital fabrication space in Seoul.

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While working with FabLab Seoul, I have proposed and led multiple collaboration projects and workshops with recognized organizations.

• SK Planet -Creator Planet 2013 Developed 6 week crash course on digital fabrication & physical computing for Korean makers.

• Small and Medium Business Administration of Korea -Making Studio Workshops for entrepreneurs 2012-2013 Planned and organized hands-on workshops which includes woodworking, metalworking, 3D modeling, and molding and casting.

• British Council 2013 - Asia Youth Tech Entrepreneurship Camp

• Ehwa Women’s University 2013 - Digital fabrication workshops for industrial design majors

Asia Youth Tech Entrepreneurship Camp 2013 with British Council

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Post-Fab Lab Seoul Consulting & Research Projects

• Gwacheon National Science Museum Idea Factory August 2013 - Present

- Provided initial program plan, customized equipment and material list for the lab setup in August 2013.

- Advised and co-planned the lab expansion in April 2014.

- Actively Implemented fablab ideas on workshops, techniques, management, staff education and knowledge sharing.

- Successfully collaborated together on multiple sponsored workshops, seminars, and fabrication projects.

• KAIST Idea Factory Aug – Nov 2013

- Provided an initial program plan, customized equipment and material list.

- Executed three kickstarter workshops on digital design and equipment operation.

CNC desk fabrication workshop in Gwacheon National Science Museum

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• Makerspace in Schools Consulting, KOFAC (Korea Foundation for the Advancement of Science and Creativity) Jun-Aug 2014

- On-the-spot consulting visit to 8 pilot schools (including five science high schools) for the government sponsored in-school makerspace project.

• Makerspace Operation Manual Development for Teachers, KOFAC Jan-Feb 2014

- Developed basic operational manual for teachers which covers principle and operation of fabrication devices, safety guidelines, and educational examples

Metalworking Workshop(Small and Medium Business Administration )

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INVITED TALKS and PRESENTATION

• Maker Faire Seoul Sep 2014

• The 1st ‘Let’s Make’ Maker Forum, KOFAC Aug 2014Keynote Speaker

• Interdisciplinary Design Symposium, Virginia Commonwealth University, Doha, Qatar May 2014

-South Korean Makerspaces as a Public Interdisciplinary Design Practice Platform: Attempts and Progresses So Far

• FabLab Asia Network 1st conference, Bohol, Philippines May 2014

3D Printing Workshop

• 2013 Annual KOFAC Conference, Seoul, South Korea Dec 2013Introductory Digital Fabrication Workshop

• Art Council Korea Nov 20133D Scaning & Printing workshop for artists

3D Scaning,Printing and chocolate casting workshop for artists -Art Council Korea

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AWARDS

• Social Economy Idea Competition, City of Seoul Mar 2013 The Grand Prize – Fab Lab Seoul

• The 2nd AOTULE Student Workshop on Mechanical Engineering, Nov 2007 KAIST Best Student Award in the oral presentation - Portable IV Pump

• The 2nd Annual Creative Design Contest, POSTECH Sep 2007 Bronze Award – Portable IV Pump

• The 4th KAIST-POSTECH Student Quiz Contest, Sep 2005 1st Prize

• KAIST Winter Camp for Stirling Engine, Jan 2005 1st Prize in Stirling cycle cooling competition

• Scholarship, The Republic of Korea(ROK) government 2004 - 2009

More projects and details can be found at

hunminkoh.com

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