So why don’t we just 3-D print everything? For now, it’s still easier to make most items in a factory. 3-D printing can also be expensive, with some machines costing as much as $500,000.
Even so, 3-D printing is changing the game, piece by piece. At the school in Malawi, for example, the walls were 3-D printed. The doors, windows, and roof were all built the usual way.
Experts say that Malawi needs about 36,000 more classrooms. Ordinarily, building that many classrooms would take about 70 years—but with 3-D printers, the job could be completed in less than a decade.
Just think about how many students’ lives that could change!