It could help a child move more independently.
That is the achievement.
There is also something valuable in the fact that the project combined technical education with service.
Zac learned through doing.
Every design problem taught engineering.
Every failed print taught troubleshooting.
Every adjustment taught patience.
Every decision about comfort taught user-centered design.
And the entire process taught that technical ability becomes more meaningful when it is connected to human needs.
That lesson may matter far longer than any particular school assignment.
Looking Toward the Future
Reports on Zac’s project say he hopes to continue working with technology as he grows older and is interested in using his skills to help more people.
It is not difficult to imagine why.
At 13, he has already experienced something many people do not discover until much later:
The satisfaction of making something useful for another person can be different from the satisfaction of making something simply because you can.
Technical skill provides capability.
Purpose gives that capability direction.
Zac found both unusually early.
Whether he eventually becomes an engineer, designer, programmer or works in an entirely different field is impossible to know.
But the way he spent this particular summer already offers an example of what innovation can look like at its best.
Not technology for its own sake.
Technology pointed toward a real need.
One Teenager, One Chair, One Powerful Idea
At the beginning of the summer, Zac Waters was a 13-year-old who loved 3D printing.
By the end of it, he had spent roughly 300 hours turning that interest into a custom mobility chair for a toddler.
He designed and printed components.
He tested them.
He assembled them.
He helped customize the chair with practical features, adjustable supports and personal details.
And he did all of it for someone he had never met.
The chair itself is important.
But the idea behind it may be even more important.
People do not necessarily have to wait until they are older, wealthier or professionally established before they can make a difference.
Sometimes helping begins with asking a simpler question:
What can I already do?
Zac knew how to 3D print.
Somewhere else, a little girl needed a mobility chair.
Between those two facts was a problem that he was willing to spend his summer helping solve.
Hundreds of hours later, his hobby had become something tangible.
Something useful.
Something carefully made for one small child.
And something that reminds us that skill becomes especially powerful when it is paired with compassion.
Sources
People — 2026
Coverage of Zac Waters’ project, including his age, Utah location, approximately 300 hours of work, the 21-month-old recipient, customization of the Toddler Mobility Trainer and his involvement with MakeGood.
MakeGood — Official Website
MakeGood identifies itself as a 501(c)(3) nonprofit that designs and fabricates free custom assistive devices for people with disabilities and provides downloadable designs for makers.
MakeGood — Official Device Library
Technical information on the 3D Toddler Mobility Trainer, described as a low-cost 3D-printed wheelchair for children ages 1–8, along with related tray tables, straps and adaptive components.
My Modern Met — August 12, 2026
Reporting on Zac’s discovery of MakeGood, his motivation, and the roughly 300 hours he spent creating the customized mobility chair.
World Health Organization — Assistive Technology
WHO information on how appropriate assistive products, including wheelchairs, can improve mobility, independence and participation.
World Health Organization — Global Assistive Technology Data
WHO estimates that approximately 2.5 billion people currently need at least one assistive product and that the figure is expected to exceed 3.5 billion by 2050.
World Health Organization — Improving Access to Assistive Technology
Information about major barriers to assistive technology, including cost, availability and financing, and the severe access gap in some parts of the world.