Turn Your $20s Into Tubmans With This DIY 3-D Printed Stamp

It wasn’t long ago that Phillip Torrone and Limor Fried heard the news that the United States Treasury was considering putting Harriet Tubman on the $20 bill. It seemed like a big moment, a beacon of progress. But when it became clear that it wouldn’t happen any time soon—the Treasury said it would wait until …

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