Mon. Dec 6th, 2021


A maze of rooms spans across the third floor of the N51, the gray building that has long held the MIT Museum. The rooms look more like a workman’s workshop than a scientist’s lab. There are dozens of boxes for storing woodworking tools, metal work tools, hammers, wrenches and bike parts. The cooking stove is a windowsill line. Pots that cool food through evaporation from the surrounding layer of wet sand occupy the hallway. Hanging from the ceiling, there is a floating bike that is suspended above four pontoons, so a rider will paddle just above the surface of the water. This D-Lab.

Ask different members of the D-Lab what D means, and you may get different responses. Often, people say “design” or “development”. At one point, D was a placeholder for the whole phrase- “development through dialogue, design and promotion.” Ta Corrales ’16 added another D word to the list: “D-Lab Derailed The student, “he says,” and I was too. “

Corales was a first-year graduate from Costa Rica when he discovered this eclectic enclave within MIT, where 26 staff members support 15 classes that teach MIT students how technological innovation can bring people together. Students, instead, teach others in less-developed areas how to create tools that make their lives easier. D-Lab helps improve the quality of life in more than 25 countries on five continents. Towards the end of his second year, Corales decided that instead of pursuing his first love, chemistry, he would make D-Lab work the basis of his career.

Problem solving

Today, five years after graduating with a degree in mechanical engineering (and a minor in chemistry) from MIT, Corrales is a leader in the OAXIN Innovation Center, a non-profit organization in Oaxaca, Mexico. OAXIN was founded in 2019 after 32 academic, nonprofit and government partners collaborated to identify ways to build a regional economy, including D-Lab and the MIT Enterprise Forum Mexico. Today, about 10 OAXIN members run workshops where locals and MIT students design and build tools for Oaxacan use. Workshop participants say they feel connected to their community and are empowered to solve technical problems. Often, they contribute to the local economy along the way.

At the beginning of a typical five-day workshop, 25 participants discussed Oxacans ’greatest needs and voted five to focus on. Participants may say that they want to prepare food faster, avoid breathing in smoke while cooking, or turn on the lights in their room at night. Once they have chosen what problems to solve, Corales leads the locals through a design process where they think about technology, create prototypes, see what works best and what needs to be improved, and then repeat the process. Small groups of MIT students sometimes travel to Oaxaca to join and who often solve prototype in the lab at MIT.

Corales demonstrates a charcoal press at a workshop in Oaxaca, Mexico.

OC3 program

“Ta Corrales has shown us that in order for a community to prosper, it needs to understand how to manage technology,” said Enoc Ramirez, a former workshop participant, through a text message translator.

Ramirez has enjoyed working with tools since childhood and he has long built machines such as agave grinders and lawn mowers. During her first workshop with Corrales in 2018, she learned design techniques, prototyping and a framework for improving her designs that made her job as an inventor and welder much easier and more efficient. Now he conducts workshops through OAXIN as well as making and fixing his business equipment.

Recently, she helped a group of women speed up fish processing by designing a knife with a blade that was optimized for disking fish on one side and cleaning on the other. She hopes that learning engineering and design skills in the workshops she and Corales run will give Oxacans more work opportunities and prevent young people like her two children from immigrating to the United States illegally, as she once did.

Inheritance activism

Corales comes from a line he calls the “working woman.” Her grandmother ran a cooperative that provides education and micro-credit to women who want to start a business in the vicinity of Los Lagos, Costa Rica. When Corales was growing up, his mother ran a school for children with learning disabilities who came from underdeveloped communities. The name Corrales comes from both of them. Her mother chose Tachamahal, which means “treasure” to her (and made her “small” when her sister was younger). And his grandmother proposed his middle name Marie in honor of pioneer chemist Mary Currie. Corales wanted to follow in Currie’s footsteps as a chemist, but he also knew he wanted to keep up the family tradition of promoting social justice.

Corales did not see himself as an engineer when he started college. This changed in his second year during a D-Lab trip to Arusha, Tanzania. Farmers in the region were using a laborious process to separate tree seeds from their stalks by hand, and Corales helped them build a bike-driven thresher so they could process crops such as corn and peas more quickly.

“Ta Corales has shown us that in order for a community to prosper, it needs to understand how to manage technology.”

Growing up, Corales moved away from electrical appliances, thinking they were only for men. But his time in Tanzania has proven that he can, in reality, use the equipment just like anyone else. “A change in self-perception happens when you are able to invent something yourself,” he says.

Back at MIT, Corales took his major in engineering. She was shy of just a few classes to get a chemistry degree, and the move meant an extra six months in school, but it seemed right. She knew she had found her niche.

Corales became a skilled engineer and soon earned the title of “Chief McGuire”. Libby Husu, a D-Lab lecturer and associate director of academics, Meng ’10, SM ’11, said he once saw Corales pull out a waterproof lantern from materials lying around the area where they were working in Mexico City. “Everyone sees him as this amazing tinker,” Hu said

Invent on a shoe

Giacomo Janello, an associate professor in the School of Agriculture, Policy and Development at UK Reading University, says there is a growing awareness of the value contained by common innovations, such as the lantern of the corals. “You don’t have to go to the moon to be innovative,” he said, adding that technology users who manage the process, such as D-Labs, are being seen as a valuable way to inspire change.

In Oaxaca, Corales has helped locals create a variety of innovations, including a thin, crunchy type of tortilla called totopo that is made only in this region. Standard tortilla presses do not thin the dough enough to form totopos, which are traditionally stretched and shaped by hand. A custom press that helped create the Corrales significantly increased the production capacity of the locals.

Corrales at the Smith Assembly Workshop
In her Smith Assembly workshop, Corales teaches participants how to make traditional Oxacan dolls, among other things.

Smith assembly

Nowadays, a company called Corrales is embracing the inclusive attitude of D-Labs worldwide. Smith assembly Which he founded in the spring of 2020 with fellow engineer Liz Hunt. With this new company, Corrales and Hunt are offering team-building workshops to English-speaking companies. With the help of the Smith Assembly, colleagues design and create tools or art projects in workshops such as Corales Lead in Oaxaca. For example, workshop participants can create traditional Oxacan dolls shaped like gorgeous or mythical creatures.

During the Covid-19 epidemic, Smith Assembly’s remote workshops helped participants innovate using common materials such as pencils, serial boxes and prescription-bottle caps. The company is building connections even among socially distance colleagues.

Corales was living with his family in Costa Rica during the epidemic, but that doesn’t mean he left Oksaka behind. He and other members of OAXIN have moved toward running epidemic-centric workshops remotely through the WhatsApp text messaging and audio segments. In Oaxaca, for example, many coastal communities focus their food production on fishing, relying on fruits and vegetables imported from other parts of Mexico. In the early days of the epidemic, the vegetable supply chain was disrupted, leaving little to buy in town shops or village markets. OAXIN runs a WhatsApp-based workshop for people who knew very little about how to grow vegetables in their backyard.

“[Before the pandemic] If you asked me if we could actually do it, I wouldn’t say for sure, ”Corales said. But in true D-Lab consciousness, he and his colleagues have invented and found a way forward.

As soon as the vaccines become available, Corales personally hopes to start touring and running Smith Assembly workshops, but for now, he is in Costa Rica and continues to work online.

OAXIN recently launched a new project to help Oaxacans commercialize traditional textiles by selling shawls through an online marketplace. As the Smith Assembly became more and more busy, Corales shifted his efforts away from running workshops in Oaxaca and measuring what impact those workshops had on participants’ daily lives and incomes. The two Oxacan Totopo producers have agreed to work in depth as a case study, and with the information gathered, Corales has found that presses save each Totopo manufacturer two hours of labor per day and increase production capacity by 50%.

Just an example of how technological innovation can bring people together to solve small everyday problems on the floor or in the kitchen.



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