Mark Rober YouTuber NASA Engineer Largest T-Shirt Cannon
Former NASA engineer Mark Rober unveils his latest project, the world’s largest t-shirt cannon. For this project, he teamed up with 12-year-old Anthony Hartman and discussed everything over video calls. To ensure that that the final design would actually work, Hartman went ahead and built a miniature version first. Read more for the build and to see it in-action.



Now you can’t just test the world’s largest t-shirt cannon anywhere, and that’s why SoFi Stadium in Los Angeles was chosen as the testing ground. Before its prime time debut during late night TV show host Jimmy Kimmel’s LA Bowl, Rober made sure that the large cannon worked as it should. When it came time for the big show, Rober joined Hartman at halftime to watch the cannon shoot t-shirts out of the stadium.

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